First of all, let’s establish what isn’t happening. Many people believe that if a puppy growls when picked up, it’s trying to exert dominance over you. That’s not the case at all.
Imagine for a moment that someone whose language you don’t speak is tickling you. You try to tell them to stop, but the message doesn’t get across. Since you are no longer enjoying being tickled, you quite understandably growl.
It’s also possible that one of the reasons your puppy growls when you pick them up is because you are interrupting other inappropriate behavior, like chewing.
Don’t Pick Up Your Puppy to Redirect Other Behaviors