Hi Dawn,
You have to wait until they turn brown. I can't imagine a squirrel doing that, but then again they do do some bizarre stuff, lol. I suspect the puppy, and I would put something around it to keep it away like a tomato cage. If you really think it is the squirrel, you could try covering it with a pantyhose leg or a sheer bag, one of those party gift bags if you know what I mean.
Maybe someone else has some other pest barrier ideas.
Remy