Show him attention first, feed him first, give him treats first, etc so he doesn't resent her being there, or feel like he's being snubbed. She's newer so not so used to any amount of attention and won't feel like she's missing out. I would gently correct any bad behavior by him towards her, as it could escalate and you don't want that. Let him know that growling or showing of teeth is not okay to do by interrupting it with an 'Ah, ah' or 'No'. |