Tucker totally does the ear chewing thing to Lexie, but she just retaliates by chomping on his back leg. It's cute and funny to a point and then one bites down too hard and yelps and I have to separate them until they calm down. He has tried to hump her twice and for my taste that is twice too many
I clap my hands to scare him when he does it and tell him no. It hasn't happened sense, but I'm afraid the ear chewing and leg biting is here to stay