Cute Cake and Cupcakes

I saw these adorable cakes at our party supply store and had to take a picture with my phone so I could share them with you. The little animals are cupcakes made in the rubber (silicone?) cupcake papers and they used frosting (fondant?) for the feet. If anybody can figure out how to do this, please share your ideas. I would love to know how to decorate/frost/fondant them like this picture.