I have a 4 1/2 month old mix bread rescue puppy. They say she is a lab mix. We got her 2 1/2 months ago and we love her! She is my first puppy as an adult. She has showed signs of aggression at the vet. The first vet we took her to they had to muzzle her because she was growling. The vet said it was very unusual and one of her recommendation was to put her down! Which seemed crazy to me. I found a new vet. Since then she has done puppy boarding and socialization and we have been working with a behaviorist/trainer. Last week we went to our new vet. She did very well(much better then the last time)for her shots but when he went to look in her ears she snapped at him. The vet seemed a little concerned and recommended we work with a behaviorist, which we are. She does not show any type of aggression at home when we are handling her. She also does not like having her nails trimmed. She does growl and guard her vomit which I have read is not totally unusual. I would love any advise!? Has anyone else experienced this with their puppy?