People tend to blame the animal for what amounts to ignorance or indifference by the owner to the proper care of the animal.
This. I've never felt the need to do the ear bite thing though. What I would do if the "NAH!" thing didnt work is to flip the dog over on the floor on its back and stand over it. Every time it tries to move to get up, get it to lay back down again. When it finally gives up, you win. If the dog wants to run through the door, I let it. Just dont push me over or step on my feet with its claws.
All the dog training I've ever learned fails on ferrets. They are so ignorant of training, I basically just try to plan according to their stupidity. If they don't use the litterbox, I clean up the room and reorganize it so they can find it easier. Perhaps its just my older ferrets that are like that though, because I trained the younger one to not bite my toes (in socks) anymore. She wants to drag the sock off but doesnt realize my foot is in there. I chased her with my foot and yelled the last time she did it, and she stopped since then.
For my foot.

In sad news, Otis died last week of an illness he has been battling for awhile now


Once Milo (other ferret & his best bud) realized, he totally freaked out and tried destroying everything in his cage, it was so sad, so sad.
Here's a pick-me-up photo of Milo goofin off. This guys obese but full of energy. Definitely a people person, his hobbies include eating, laying upside down, sleeping in unusual contortions, and doing barrel rolls. In the pic he is laughing because someone is tickling his belly-fat, of which he has a bunch.
