I was going through some old footage and found this really sweet video of Dumptruck and Porkchop grooming each other. This was when they were young, but I still catch them snuggling and grooming now and then. Sorry about the poor video quality. I thought this would be a good example for people to see the difference between biting and grooming. Grooming each other is a good sign that they are happy and compatible. This is what I mean when I try to explain that grooming is more of a corn on the cob motion than a bite.