You def. need to wait until the 2nd heat, and how big is your little girl? Yes, you should always use a smaller boy, and if you don't have any experience in breeding, I wouldn't myself do it, and I've had small dogs for years. I know a lady that had been breeding, and she lost her female the 2nd time she had her pups..it devastated this woman..I don't know much about breeding, as I really don't care too..It would devastate me to breed any of my pets and lose them..something to think about |