Bad Dog

I'm not sure what's going on with our beloved little guy, Sammy Rhodes. Not only is he destroying everything in our place, but now he's marking his territory on places only Keith sits. What is that about? It's like overnight he's suddenly super clingy and possessive. 

When Keith tries to come to bed, Sammy attacks him. I don't know what to do aside from shutting the door to our room at night, which will drive him batty. He's heading to my dad's for a few days, maybe that'll help?