Crocodile, perhaps, one of the most terrible animals that scare children. His aggression is inexplicable for the unenlightened man in the street, although dictated only by instinct. On the inexplicable desire of an adult crocodile to drag the victim to the bottom of the set of many works of art works. Therefore, the answer to the purely practical question is always interesting: "How much does a crocodile weigh, so that it can deal with the victim so easily?"
Size and weight
How much a crocodile weighs, what its size will be, depends on the type and sex of the reptiles. The sea (it’s a ridge) can grow more than seven meters and, accordingly, will weigh approximately a ton. Dwarf crocodiles (stupid, he is West African) grow to a maximum of 1.9 meters, and he will gain weight up to 32 kg (maximum - 80 kg). Crocodiles are animals with pronounced sexual dimorphism, males grow much faster and become much larger than females. And the carcass weighing more than a ton grows out of a baby in the size of 20 cm.
Observations on the size of crocodiles and their weight are hampered by the behavioral characteristics and inaccessibility of reptile habitats.
Only reliable observations of crocodiles in captivity are reliable. The largest crocodile ever observed is a hybrid of a comby and Siamese crocodile named Yai on one of the farms in Thailand. Its length is 6 meters, weight - 1114 kg.
The length of the largest crocodile caught alive - 6.17 meters, weight - 1075 kg (Philippines).
How many crocodiles live
To determine with high probability the age of a crocodile is difficult. The usual method is the method of measuring lamellar rings in the teeth and bones: once every year, when the climate changes from dry to wet, a new ring appears as a result of a change in growth rate.
Therefore, almost always the age of crocodiles is spoken with a probable degree of probability. According to such estimates, almost all types of crocodiles live from thirty to forty years, although it is believed that large ones (crested, Nile, marsh, Central American) can live up to 70 years. Some of the largest specimens of crested crocodiles live for more than a hundred years.
Crocodile like an animal
The name of the crocodile is usually used to identify all reptiles of the crocodile species. But only members of the family of real crocodiles can be strictly attributed to Crocodylinae. Based on this, this article will consider the features of the crocodile family (with the exception of gavial and alligator)
There are 24 species of crocodiles in the world, divided into 3 families and 8 genera.
The largest family - crocodile, includes three genders - real crocodiles, blunt and gavial.
1 genus - these crocodiles:
2 genus - stupid crocodiles. It includes only one representative - a stupid crocodile (in Latin - Osteolaemus tetraspis) - West African dwarf crocodile.
3 genus - gavialovye.
It also has only one representative - Tomistoma schlegelii (false gavial).
African Ragged (Mecistops cataphractus)
Referred to endangered species, little studied. Habitat - throughout western tropical Africa from Lake Tanganyika and Lake Mweru in the east / southeast to the Gambia River in the west. The length is up to 4 meters (although individuals more than 3–3.5 meters are not observed today at observations), the weight is presumably up to 230 kg.
It feeds mainly on fish, adults can eat turtles and birds, females lay up to 16 large eggs, the clutch is not protected, the breeding period is up to 110 days. They live in rivers overgrown with vegetation, according to estimated estimates, now up to 20,000 adult individuals, its number is constantly decreasing. They live in 10 subpopulations. When asked how long the crocodiles of Mecistops cataphractus live, scientists cannot precisely answer because of the insufficient knowledge of the species.. Estimated data of the Red Book - 25 years.
Marsh (Crocodylus palustris)
Red listed, habitat in India, Sri Lanka, Pakistan, Nepal and possibly Bangladesh, its range extends westward to eastern Iran, the current status is about 87,00 individuals, an increase of almost 6,000 adults since 1989 crocodiles.
It lives in any water bodies, even artificially created, digs holes along the banks, where it survives in dry time or extremely cold (up to 5 degrees). It feeds on fish, mammals, birds, turtles. In the fight with the leopard wins more often. Seen recently in the attack on people, which indicates, according to scientists, an increase in the number.
It is considered an average species, the size of an average crocodile: females - up to 2.45 meters, males - up to 3.5 meters, weight on average from 50 kg for females and up to 250 kg for males. The weight of a full-grown male can reach up to 400 kg with a length of up to 4.5 meters. In laying can be up to 30 eggs, the breeding period from 50 to 75 days. It moves well on land, can develop a decent speed - up to 12 km per hour. An interesting feature is the creation of bait for hunting birds. The crocodile is placed on the face (and it lies on the water in a horizontal plane) tree branches. Birds, anxious about the lack of building material for nests, fly very close to the reptile.
Combs, or marine
The largest kind of crocodiles and the most dangerous for humans. Settlement area - inland and surrounding waters of Southeast Asia and Australia. This species is the most common and most studied.
How much a crested crocodile lives is best known, since both hunters and scientists were engaged in studying this species because of its danger. According to observations, the life span of this species is 50-80 years, although according to the studied remains, some specimens survived to a hundred years.
The size of the comby crocodile is quite impressive. The maximum of those described is 10 meters, although today it is from 5 to 6 meters. Weight up to two tons. On average - up to 700 kg.
Growing all my life. In the biosystem of its range - the top of the food chain. Adults eat not only fish, small and medium-sized mammals, but also the largest animals, including predators.
According to research by paleontologists, this type of crocodile originated more than 12 million years ago. It is considered very ancient.
The peculiarity of the combed crocodile is its ability to travel far in seawater. Labeled individuals swam up to 500 km from their traditional habitats, using sea currents to conserve their strength.
Scientists define its status as the least vulnerable to extinction.
Cuban (Crocodylus rhombifer)
It is listed in the Red Book (there are up to 5,000 adults, under threat of extinction due to extermination and hybridization with narrow roots (both in artificial and in natural conditions, the offspring reproduces). Lives in Cuba, refers to medium-sized (2.3 meters in length, weighing up to 40 kg), hardened males can reach a weight of up to 200 kg with a length of up to 3.5 meters.
One of the most aggressive crocodiles. It moves well over land at a speed of up to 17 km per hour. Females lay up to 60 eggs, the incubation period is up to 70 days. Eat fish, mammals, birds. People are rarely attacked in natural conditions, it is believed that this is due to their small number. In conditions of bondage, behavior is extremely aggressive towards a person.
Nile (Crocodylus niloticus)
This species is considered as aggressive as comby. The size of a crocodile is slightly smaller than a ridge. The descriptions indicate the length of up to 6 meters, but today the existing mature individuals, depending on the region of habitat, can be up to a maximum of 3.5 meters. There are a lot of modern reliable records about how much a crocodile weighs Crocodylus niloticus, to estimate its weight on average. Observations show that the weight of the modern Nile crocodile can vary from 250 to 350 kg.
His lyudyuedsky addictions are known to all residents of the vast territory of Africa south of the Sahara. He prefers freshwater reservoirs of Africa, but the population noticed him in coastal waters. He, like the crested crocodile, the top of the food chain of its ecosystem, eats everything and of different weights, which it can reach, jump, grab. Animal status is the least dangerous for extinction.
New Guinea (Crocodylus novaeguineae)
Relatively small of these crocodiles. According to DNA research recognized as a close relative of the Philippine, but highlighted in a separate species. Habitat - inland waters of the island of New Guinea. Until 1996, it was listed in the Red Book with the status of "threat of extinction", then with the assessment - "the least concern". Like all crocodiles, it was destroyed in the region of the fifties and sixties of the last century because of its valuable skin. In 1970, after adopting a conservation program, numbers were restored by 1996 for the natural continuation of the population. Now there are, according to various estimates, up to 50 thousand.
Crocodile novaeguineae crocodile size is from 2.7 meters in females to 3, 5 meters in males. Measured body weight - 294.5 kg.
The New Guinea crocodile is divided into two populations - the north and the south. Lifestyle (especially clutches) of crocodiles in them is slightly different. In the northern population, the nest is built on water from plants, in the southern - more often on land.
The New Guinea crocodile is the most vocal crocodile: both kids and adults make a huge amount of sounds for different life situations, which allows them to “communicate”.
This crocodile (Crocodylus intermedius) has the status of an endangered species in the Red Book. To date, its number is estimated as extremely low to maintain the population - only up to one and a half thousand.
In the fifties and sixties of the last century, after a mass hunt was almost on the verge of extinction of the population. In 1970, after the introduction of protection status, the number increased slightly. Exterminated until now, as it has valuable skin. In addition, the local population collects crocodile babies for sale.
He lives in Venezuela and Colombia (Orinoco river basin), prefers fresh lakes and rivers.
The size of a crocodile is quite impressive - up to 5.2 meters (males), females are much smaller - up to 3.6 meters. Due to the lack of knowledge (due to the lack of the individuals themselves), there is a problem in determining the mass. How much a crocodile weighs Crocodylus intermedius, it is known from hunters, the average is considered to be the male's weight - 380 kg, the female - 225 kg.
In laying, a maximum of 70 eggs. The mother not only protects the eggs for two and a half months before hatching, but also takes care of the babies for the next three years.
Known cases of attacks on people. But due to the small size of the population and the inaccessibility of habitats, this rarely happens.
The largest crocodile of the New World. Lives in fresh and salt lakes, in the mouths of rivers. They move well in water, settling the islands. The size of the crocodile of this species depends on the population, somewhere smaller (on average, up to 4 meters), somewhere larger (up to 5-6 meters in mature males). The main food - fish, in contrast to the comby and Nile (similar in size), do not switch to mammals. Seen in attacks on people, although this is quite rare cases.
Freshwater (Crocodylus johnsoni)
It inhabits the rivers of Australia, does not go out to the sea and the mouths of the rivers, being afraid of being caught by the ridge (sea) crocodile. It feeds on fish and small vertebrates. Sizes on average up to 3 meters, in the population in the north of Australia the size is smaller. Not dangerous for humans, since the force of compression of his jaws is rather weak. How long Crocodylus johnsoni crocodiles live in captivity (in particular, in the Australian Zoo) is known for sure - up to twenty years, although presumably individual individuals can exist and grow up to a hundred years or more.
Siamese (Crocodylus siamensis)
Zhivet at Indonesia, Brunei, in East Malaysia, the southern part of Indochina. Crocodile populations living in all countries of the region, totaling only 5,000 individuals. Listed in the Red Book. In Kam Bodja and Thailand, special programs for the conservation of the species have been successfully operating. The maximum size of this crocodile is 3 meters, although it is up to 4 meters when hybridized with the comby. It feeds on fish and small vertebrates.
Central American (Crocodylus moreletii)
He lives in the tropical forests of Central America. The size of males in today's conditions is up to 2.7 meters (previously, according to the results of hunting, up to 4.5 meters and weighing up to 400 kg). In cannibalism recently not seen, the explanation for this - the remoteness of habitat. It feeds on fish, reptiles and mammals.
Dwarf Crocodile (Osteolaemus tetraspis) - West African Dwarf Crocodile
It grows up to 1.8 meters (maximum), weight is from 18 to 32 kilograms (maximum - 80 kg), it is found alone or in pairs, lives in burrows or duples of trees, tilted close to water. This is a heavily armored crocodile (it needs it to protect against large predators eating it), with dark spots on its back and sides, with a yellow belly. Compared to the largest crested crocodile (up to 9 meters), it is just a baby, considered the smallest crocodile in the world (similar in size to a smooth-looking caiman).
Refers to the little-studied species. According to the study, the number of the crocodile is slowly decreasing due to changes in the ecosystem of habitats (deforestation, approaching places of human activity). Listed in the Red Book with the status of a little vulnerable.
He lives in western Africa. Prefers fresh water. Leads nocturnal. Dig deep holes, and quite often their entrance is located below the water level.
In laying, most often 10 eggs (maybe sometimes up to 20).
Tomistoma schlegelii (false gavial)
He lives in Indonesia, Malaysia, Vietnam. It prefers slow rivers, swampy lakes. Lives among the thickets or on the drifting islands of vegetation. The type of false gaviala is listed in the Red Book with the status “under threat of extinction. The number of all populations of no more than 2500 adults. The size of the males of this species can reach up to 6 meters. Because of the elongated muzzle got its name - gavial. Narrow long muzzle - the result of food addictions, mostly soft mammals and reptiles. In recent years, there have been several attacks on people.
How long does a mosquito live?
Despite the fact that crocodiles spend most of their lives in the water, they breathe light. This is surprising, but due to the unique structure of the respiratory system, they are able to do without oxygen from 30 to 40 minutes. In captivity, reptiles grow faster because they have no shortage of food. Many are interested in this question: how many years has a crocodile lived? This representative of the cold-blooded ones could well afford to celebrate the 100th anniversary. But most often the reptiles simply do not live to such a respectable age.
Factors affecting the life expectancy of crocodiles
Hunting for hides. It's no secret that crocodile skin is quite highly valued among haberdashery manufacturers. In addition to purses and bags, it is used for sewing shoes. Therefore, these cold-blooded due to the ruthless destruction poachers do not live to even 50 years of age.
Changing habitat conditions. The further a person intrudes into the wild nature, the greater the place in it is civilization. Deforestation, artificial drainage of water bodies and the construction of dams in most cases have a negative impact on the lives of animals. In such conditions, crocodiles have no opportunity to ensure the full development of their offspring, which is dying due to the absence of small fish, frogs and insects.
Natural selection. Despite the fact that the female crocodile practically does not move away from the clutch, in rare moments of its absence, eggs can become easy prey for other predators. And even after moving to a shallow reservoir, the young lurks a lot of dangers, including adult relatives, who do not disdain even babies.
Temperature mode. Optimum conditions of maintenance is sufficient water space and heat. At temperatures below 20 degrees Celsius, even in adults, life expectancy is significantly reduced.
How many years has a crocodile lived?
In the limited space of the zoo, with good care, crocodiles are quite capable of crossing the 70-year-old age line.
Wildlife dictates its own rules; therefore, in its natural habitat to a very old age, this species of reptiles is extremely rare to survive. Least of all live caimans (an average of 4 years). In Nile crocodile this figure is much higher. Under favorable circumstances, he will be able to live 8-10 years.
Unfortunately, despite the law prohibiting killing crocodiles, the hunt for them never stops. Therefore, longevity among these animals is quite a rarity.
How many crocodiles live in the wild
Adult crocodile is considered to be about 10 years old. In the wild, oddly enough, crocodiles live less than in captivity. On average, crocodiles live to 40-50 years.
In fact, these reptiles in their native tropics and subtropics have no enemies, except for one person. It is he who directly affects how long the crocodile will live. No matter how sad, but exterminating the crocodiles for many reasons:
- banal fear
- thirst for money on crocodile skin,
- употребление яиц и мяса в пищу.
Для человека это самые опасные хищники. Лидерами по количеству нападений на человека стали нильский, гребнистый и болотный крокодилы.
Опасность в дикой природе подстерегает только молодых крокодильчиков, которые могут быть съедены черепахами, варанами и цаплями. Интересно, но дожить крокодилу до почтенного возраста не дают свои же собратья. Они просто убивают старую особь.
Сколько может прожить крокодил
Эти зубастые рептилии славятся своим долголетием. Учёные полагают, что если бы крокодилы не имели врагов, то они могли бы жить вечно. Если рептилия здорова, то она легко проживёт 100 и более лет. But people do not give crocodiles such an opportunity. They reach 40-50 years old because a person hunts them not only for the sake of skin, which women of fashion around the world like so much, but also because of meat. The hunters who destroy the crocodiles, get a lot of money. They do not care how long the crocodile lived. Most valued large individuals that reach 50 years. That is why reptiles and do not live in nature longer than this period. Many thanks to the "good" hunters.
In the reserve, which is located in Botswana, there is a crocodile. His name is Henry and he is only 116 years old.
The number of crocodiles can be reduced for other reasons. For example:
- the construction of dams on the rivers
- drainage of swamps
- industrial fishing.
This leads to the fact that reptiles become nowhere to live. The search for food becomes very problematic, so crocodiles die from hunger.
The unusual body of crocodiles
I was extremely surprised how unique these reptiles are. It is a pity that our body is not capable of this. So:
- they grow all my life,
- have developed sense organs
- can hibernate during a drought,
- their weight can reach more than 1000 kg,
- can attack a mammal that is larger than them,
- every two years there is a change of teeth,
- crocodile can do without food for one and a half years,
- blood contains antibioticprotecting against harmful viruses.
Most laugh the Chinese. That's certainly an inventive people. Imagine, they used to keep a crocodile on chains, like a dog, so that he would guard their home.
I heard only about one good crocodile - the crocodile Gena, of course. Others such lizards instill only horror. However, crocodiles are absolutely amazing creatures.If only because they are one of the oldest animals in the world that have survived to this day in almost unchanged form.
Probably, many have heard that these reptiles live long enough. More information I would like to describe in this story. :)
How many years have crocodiles lived
I found different data in different sources. In general, in most cases, crocodiles live for about 70 years. However, the life span of different species can vary considerably. Here are some examples:
- Salty crocodile - this lizard usually lives about 60 years. This type of crocodile tends to attack people more often than other species.
- The Nile crocodile - reptiles of this species, as the name implies, mainly live in Egypt, in the Nile Valley. They live about 80 years. When I was in Egypt, I went on one tour. She suggested crossing the Nile in a small boat. The guide and the driver of the boat constantly looked around, and only when we arrived did they say that there really are crocodiles. Dangerously!
- American crocodile - these individuals live less than the rest - about 40 years. However, there are cases in which these lizards lived to 70 years!
In addition, science is aware of data on long-lived crocodiles that have lived for more than 110 years. Of course, we are talking about crocodiles in captivity. After all, this is possible only in very good living conditions.
I made a small selection of interesting facts:
- At the time of dinosaurs, crocodile-like dinosaurs dominated water and land. These individuals were enormous and more adapted to their habitat than many other dinosaurs.
- In the water, crocodiles can reach a considerable speed - 36 km / h. This allows them to overtake their victims very quickly.
- When I said that crocodiles adapt well to their living conditions, it was no joke. :) There are cases when alligators snatched small ponds on their own.