Hybrid animals, also known as crossbreeds, are created by combining two different animal species. Hybrids have been around ...

Animals can be divided into groups ... Reptiles can live in many different places, like deserts, forests, and oceans. Some examples of reptiles are snakes, lizards, crocodiles, and turtles!

We move on to consider the evolution of mate choice, and then we describe the types of mating systems found in animals. Sexual reproduction often involves evolutionary differentiation of males and ...

Volterra, V. Variations and Fluctuations of the Numbers of Individuals in Animal Species Living Together. Reprinted in 1931. In: Chapman, R.N. Animal Ecology. McGraw-Hill, New York (1926).