I'm looking for the name of a children's book?

two children's books I'm looking for: The first one I forget everything about all I know is it's an older, it's hard back, it has a blue cover, and one of the characters has like a hippo face with antlers and fins I think he's blue and grey and walks around on the ground. All of the characters in the story are really weird... The other story is about an animal or two that are traveling along a trail and along the way they meet up with other animals and at the end of their journey they end up at this house in the middle of the woods where the robbers are. The animals hear loud noises coming from inside the house so they decide to stand on-top of one another to see what's going on. They see the robbers play cards. drinking, and all of this money... What are name name of those two books?