What is the difference between the Crocodile, Alligator and Gharial?

Crocodile are reptiles endemic to the tropics of Australia, America, Africa and Asia.
Photo Credit: smrtenglish.com
The word “crocodile” is sometimes used to include the extent family of the order crocodilian, which includes the gharial, the false gharia, the alligator and caimans.  Although, morphological, they all look quite alike but with clear distinctive features, they belong to separate subfamily. The most obvious external differences between crocodile alligator are visible in the head, with crocodiles having narrower and longer heads, with a more V-shaped than a U-shaped snout compared to alligators and caimans. Another obvious trait is that the upper and lower jaws of the crocodiles are the same width, and the teeth in the lower jaw fall along the edge or outside the upper jaw when the mouth is closed; therefore, all teeth are visible, unlike an alligator, which possesses in the upper jaw small depressions into which the lower teeth fit. Today will be about the subfamily of the true crocodile or the crocodylinae.

Crocodile are reptiles endemic to the tropics of Australia, America, Africa and Asia.
Photo Credit: livescience.com

Crocodile are endemic to the tropics of Australia; crocodile australia, America; crocodile america, Africa; crocodile africa and Asia; Crocodile asia. They have been known to live in fresh waters, saltwater and brackish water. Crocodiles are Carnivorous animals feeding mostly on vertebrate preys  like mammals, fish, birds and reptile.  

Crocodile are reptiles endemic to the tropics of Australia, America, Africa and Asia.
Photo Credit: Oceana.org

Crocodile are known for their enormous size; a larger species can be over 17 ft long and weigh over 900 kg. The largest crocodile ever held in captivity in the world is an estuarine–Siamese hybrid named "Yai", this animal measures 20 ft in length and weighs 1,114 kg. The longest crocodile ever captured alive is "Lolong", which was measured to be 20.2 ft and weighed at 1,075 kg by a National Geographic team in Agusan del Sur Province, Philippines.

Crocodile are reptiles endemic to the tropics of Australia, America, Africa and Asia.
Photo Credit: factslegend.org
Crocodile lay eggs in nest or mould made in sand. Mating usually takes place in the water.  Crocodile embryos do not have sex chromosomes, and unlike humans, sex is not determined genetically. Sex is determined by temperature, where at 30 °C or less most hatchlings are females and at 31 °C, offspring are of both sexes. A temperature of 32 to 33 °C gives mostly males whereas above 33 °C in some species continues to give males, but in other species resulting in females, which are sometimes called high-temperature females. Temperature also affects growth and survival rate of the young, which may explain the sexual dimorphism in crocodiles. The average incubation period is around 80 days, and also is dependent on temperature and species that usually ranges from 65 to 95 days.



Reactions: