Presley is a pure bred black lab. Not once has she growled at me like that.. She has growled when playing alone with her rope and other toys. But her sister from the same litter who is now 8 months old and since the day the people got her has always growled. She has now taken to bitting them when she doens't like something. She started the bitting when she was about 8-10 weeks old though. It was never corrected. She doens't get to come in the house to see anyone and she is stuck in a dog run with the other lab they had pretty much all day everyday. I think it is something that can be corrected and if Presley's sister were my dog it would have been.