What about a hedge/tree line. Where the animals looks like its made of a hedge? Or prehaps we call them trees, and add apples and oranges!!!
What about a line of valuable dogs? they can all be made of diamond, emerald, gold, silver, or ruby. I think that would look cool.
Another idea is a line of fireplace inspired pets. it would look like cobblestone for the most part, but then there would be a fire somewhere
Thats all for now