You're not a bad parent... look at me with my Mom.\ Mom's experience with kitties was that if you play rough, they react rough. You have to teach the "ouch" to kitties just like pups. Boomz may not like it but when you play rough and he starts to get out of hand (ie: bites or claws), say ouch or No and walk away from playing. Toys are one thing but humans are another. It's like teaching to use a scratch post vs couch --- ok to bite mousie / not ok to bite Dad. Oh, and good luck... kitties are like little terriers - do what they please.
What she said... Play with him as normal, but as soon as there's claws or biting, say OUCH or NO firmly. Not yelling, but not normal speaking tone either. Then walk away and ignore him for 5-10min. Boomer will not be pleased, but he should learn pretty quickly where the boundaries are (they are more easily taught when younger though). Patches was a biter when I first adopted her, but she learned fast that attention goes away when she bites. I can really play rough with Alvin and never get bitten or clawed, but I've also had him since he was 4 weeks old and he was never allowed to learn that type of behavior.
That sounds like me! I only
"love bite" my Mom - everybody else don't even come near me.....
Scouter-Roo on May 16 at 11:18 PM