Is plain Activia yogurt ok to give my new puppy? He won't eat his dry Pro Series kibble the breeder sent, only the yucky ceasar soft food that she also included. He is so incredibly small. I was wondering what other thing I could give him to make him eat more. Is activia plain yogurt ok? There isn't a store opened here yet on Sunday, and that is the only yogurt I have. I'm so worried, I feel sick.