We have a 10 week old male Labrador/Mastiff puppy. He started puppy class and we were told he had to have the Bordetella vaccine to continue. Our vet gave him the nasal spray vaccine. Within a few hours he was snippy and agressive - he had not previously been. As soon as we got home, he made a bee-line for our 5 year old son who was sitting on the floor and bit him. He ran a fever the rest of the day and through the night. We gave him some benedryl. He is eating and pooping fine today, and without fever. But he is still showing much more agression that he ever did before his shot. But there is still the agression. We are very sad indeed. This morning, he bit our 5 year old's pants and began to growl at him. He hasn't growled at any of us the whole week he has been home before yesterday's vaccine. I feel as if we have ruined our sweet puppy.
So interesting reading the ladies story on the lab x mastiff pup having the kennel cough vaccine and puppy becoming suddently aggressive . My pup is same breed and did exactly the same with my other dog since vaccination , and has continued to . before her vaccination she was lovely, kind.
