Attached Link: http://www.mariomonsters.com/yoshi

I think he means that funny dinosaur looking thing from the Super Mario games, check the link... =o)

Donnie: My parents didn't get me what I wanted for Christmas. Dr. Lilian Thurman: What did you want? Donnie: Hungry Hungry Hippos. Dr. Lilian Thurman: And how did you feel, being denied these hungry, hungry hippos? Donnie: Regret.