The Family Iguanidae comprises of a diverse group of lizards. This family includes over 700 species, which are distributed in tropical and subtropical regions all over the world. Some common synonyms for the Family Iguanidae include the group of iguanas, iguanids, and iguanians. Different species within this family possess unique characteristics and physical features such as a dewlap, cranial crests, or spines, which differentiate them from other reptiles. The Family Iguanidae comprises of some of the most popular lizard pets, such as the green iguana, and plays a crucial ecological role as a herbivore and seed disperser in their ecosystems.