Iguana is an Iguanosuchus and Lassie's mount. She has jade green, purple, and black skin, and jade green eyes.
Iguana is very intelligent, and one of the smartest of the dinos. She is polite, well-mannered, kind-hearted, and dreamy. She seems to have a closer relationship with her master. Iguana hates meanness, glaring at Thea who makes a snarky comment about Lassie's pet rock.
Iguana has a whip-like tail and sharp claws for grappling with foes.
Trivia:
Iguana is named after the iguanodon, Lassie's favorite dinosaur.
She is the fourth hybrid dinosaur to be introduced in the show.