I bought a puppy from a private party, woman's female Pom when she didn't know the dog was in heat mated with the women's mother's Yorkie. The puppy I got was the last one and I was told it was 6 weeks old. I don't really agree to taking a pup away from the mom until 8 weeks but she did. The pup is suppose to be about 5 lbs when grown, but I don't think that is going to be the case, she also looks totally like Pom and I do not see any Yorkie in her. After a few days with the pup the woman finally told me the birthdate was January 24th which means when I picked up the pup it was 2 days shy of being 6 weeks! The pup was very active and eating food. But I noticed the pup had the runs so the seller told me she had the pup on wet puppy chow food, which I cannot find in stores. So now I have the pup on a mixed of a little wet puppy food, yogurt and weaning formula for puppies. I am not sure what else to give the pup. Her stools are only slightly loose now. Another issue I have is the pup is very agressive at 7 weeks now. I think they played with the pup with their hands/fingers making her growl and nip. When she is kept from doing what she wants to do, chew on pants legs, picked up, etc. she will growl very much and very strongly and will not stop until I put her down. I have broken her somewhat by immediately putting her down and not giving her attention. But not sure what else to do and because she is so young not sure if treats are appropriate just yet. Any help would be appreciated. She has a vet appointment this coming Thursday.