Its a dominance issue. I asked this same question a few months ago because Keely decided to grip onto my arm and hump it. It made me laugh, but I corrected her and she doesn't do it anymore. I thought she was too young too, but when I asked the vet and other YT members they said it was dominance. She has never humped any of her toys either. But my aunts silky terrier she goes to town on her winne the pooh bear and she is 9 years old, and your not allowed to touch her bear either. LOL |