When I was looking I thought I saw 3 sizes, but I might be wrong - maybe the person selling them used different wording to describe them. Anyway, Kalina has the littlest one - and it's plenty big enough for her. She can fit her head in and get the squirrels out of the tree. I think if the squirrels were any bigger she might have a hard time holding them in her mouth. She's almost 4 pounds and still growing, but I still think the small size is good for her.
