Finally, after much feeding, the baby has grown into a full Dino! Dinos can eat almost anything, including things with spikes. In order to do so, they must have very tough stomachs. Green Dinos are the only type of Dino that is able to walk on two legs. This frees up their front two legs, which they use to catch and eat fish.

A very social dinosaur, Compy greets everyone he comes into contact with. He often has a plate of Lagie's brownies handy and will always offer them to anyone new to his social circle.

Compy likes to leave messages on trees. He calls these messages 'posts' and he insists they are simply another way of saying hello. He will post a few each day and doesn't feel the day is complete if he hasn't posted any. The other dinos and dragons find this a little odd, but since they all enjoy Lagie's brownies, they don't dare tell Compy what they think of his compulsive posting.