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Most crocodile species have been bred in captivity but on a commercial scale only a few species are involved. Breeding is normally seasonal and one clutch a year is the rule although double clutches sometimes occur in captive animals and are quite common in the mugger. As in many other animals environmental factors such as rainfall, day length or temperature changes act as seasonal stimuli to breeding but little is yet known about this and an internal rhythm may also be involved.

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Despite a few key anatomical and behavioral differences, male and female crocodiles may be difficult to tell apart. Carefully examine size, shape, reproductive organs and behavior. The differences may not always be immediately obvious, but a closer look allows you to tell which are which.

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Crocodiles subfamily Crocodylinae or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. Crocodylinae, all of whose members are considered true crocodiles, is classified as a biological subfamily. A broader sense of the term crocodile, Crocodylidae that includes Tomistomais not used in this article.

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After the first post on the genitals of birds and fish, we close chapter on the curiosities of the penises, vaginas and other reproductive organs of amphibians, reptiles and mammals. As we saw in a previous post, the cloaca is the hole where the digestive, reproductive and excretory systems converge. All amphibians possess cloaca, as well as reptiles, birds and some fish sharks and rays and mammals. Larvae of amphibians are characterized by a great transformation known as metamorphosis.

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If you want to know whether a crocodile is a male or a female, you have to catch it. Don't bring your good shoes. Even at night the heat is smothering, and a halo of bugs swirls around headlamps as the team motorboats down waterways or stalks the animals from shore.

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All rights reserved. The male American alligator, Alligator mississippiensiskeeps its penis erect but tucked inside its body until mating. More than 10, reptile species in every shape and size scurry and slither across Earth, from garter snakes to crocodiles — and their nether regions are just as wildly varied.

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This is a detailed care guide for serious keepers of caimans, alligators and crocodiles. If you're looking for a friendly, loving and easy to care for pet, this guide is definitely not for you! How do you sex a crocodilian?

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Don't have an account yet? Get the most out of your experience with a personalized all-access pass to everything local on events, music, restaurants, news and more. The Washington Post characterizes it as an "emerging global problem. The topic that has caused such consternation?

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Unlike many other reptiles and mammals, alligators sport permanently erect penises that hide inside their bodies, new research reveals. The reptiles sport fully erect penises made of tough, fibrous tissue that shoot out of their bodies and get pulled back in just as quickly, according to the study, which is detailed in the March issue of the journal Anatomical Record. Very little was known about how alligators mate, Kelly told LiveScience.

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It is the most popular and most studied type of environmental sex determination ESD. Some other conditions, e. While TSD has been observed in many reptile and fish species, the genetic differences between sexes and molecular mechanisms of TSD have not been disclosed. The eggs are affected by the temperature at which they are incubated during the middle one-third of embryonic development.

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