The term 'Spiny-Crested Lizard' is a type of IGUANA, which is a species of lizard found in tropical climates. It is characterized by its spiny crest along its back and its long tail. The scientific name for this species is IGUANA iguana. This species of lizard is native to Central and South America and is often kept as a pet due to its docile nature. They are omnivorous and feed on a variety of fruits, vegetables, and insects.