Clover i all her nearly 6 years has never growled at me or any other person, i can take food off her and always offer a treat for bones or rawhides.

Elvis on the other hand has growled at me and my Mum, but it only took 2 times of rolling over onto his back and "Telling him off" to stop that. Neither time was over food it was about grooming his tail (He is much better now), he will go to sleep being groomed now. All i have to say to him is "Give" and he will drop what ever is in his mouth. I am so proud.

And of course they play growl with me and one another all the time and i am fine with that, but if it turns agressive at all i firmly put a stop to it as i am alpha.