<human>: I'm a bit confused about the differences between a tetrapod and a dinosaur. Can you help me?
<bot>: Tetrapods are a group of animals that evolved from fish, including amphibians, reptiles, birds, and mammals. Dinosaurs are a subgroup of the clade Dinosauria, which is a group of extinct animals that lived during the Mesozoic Era. The term "dinosaur" is often used to refer specifically to members of the suborder Saurischia, which includes the most famous and iconic dinosaurs such as Tyrannosaurus rex and Triceratops.