Facts About crocodile | Wild Wide Life

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Crocodiles are sexually dimorphic, and adult males are larger than females. Copulation occurs in the water, and it is preceded by a complex courtship in which the animals signal each other using changes in body profile, touch, and vocalization. Chemical signals are probably also part of courtship. The male then mounts the back of the female, and both animals rotate their tails so that the respective cloacae are brought into contact and intromission of the male erectile organ is achieved.

All crocodiles lay hard-shelled eggs, which may weigh 50–160 grams (0.1–0.4 pound) each. A female lays an average of 12–48 eggs per nest, depending upon her age, size, and species. Two general forms of nest building are known. Some species, such as the Nile crocodile (C. niloticus), dig a hole in the ground and refill it with dirt after the eggs are deposited. Others, such as the estuarine (or saltwater) crocodile (C. porosus), build a mound of plant material and soil.