Meet Rexx, he’s got quite the laundry list we’re tackling… He’s attacked all the other dogs in the house. (4 in all.) He’s nipped/bitten multiple humans when jumping/aroused. (Broken skin.) He’s selective about who can take him outback for a pottie. (If it’s anyone but the female owner he runs away and will sit and growl.) And he’s got some resource guarding issues—with dogs and humans. (And it appears rather serious.) He also knows his obedience commands from a prior training program—which I ho