The caiman is a close relative to the alligator and the crocodile. They are all members of the same family of reptiles known as Crocodylia. However, they differ in their physical characteristics and habitat. Caimans are typically smaller than alligators and crocodiles, and they are found mainly in Central and South America, whereas alligators and crocodiles are found in different parts of the world including Africa, Australia, Asia, and the Americas.