Coop Dog Collection

Coop is Renji's dog, a big, curly Bernedoodle who has lived at Sunrise Sanctuary since he was eight weeks old. He wants to play, eat, help and be included in everything, and he has never suspected that his help is why the job takes twice as long. He leans his full weight on anyone he likes, brings people things he is sure they need, and treats the tube from a toilet paper roll as treasure. He is dopey. He is also sharper than he looks, and he notices when someone he loves is hurt.

After the mutation, Coop can grow into Cooposaurus Rex, a spiky-maned giant who stands thirty-one feet tall on his hind legs, and then shrink back to ordinary dog size. Nothing inside him changes. He is the same gentle, distractible, paper-loving dog at either size, which is exactly why the big one is so much harder to live with.