Our breeder told us to be very wary of vets. Due to the small size and delicate nature of Yorkies, as someone else said, they give the same dose to a 5 or 100 pound dog. Baby children are not dosed this way. I thought better safe than sorry. He also warned NEVER let them put a Yorkie asleep with a shot, they need to be gassed (for surgery or such). He has a wonderful website at
www.yorkiepup.com.