Help! Just recently, my dog (a 5 year old shih tzu, lhasa apso mix) attacks my sleeping cat in the middle of the night. I've had Maggy (dog) since she was 8 weeks old and Sammy (cat) knew her as a puppy. They got along fine until just recently when if she's disturbed in the middle of the night (me moving my feet, etc. while she's on the bed), she will just attack him for no reason! He used to sleep on a hope chest at the foot of the bed, but because of this, he sleeps on the floor and still gets attacked. He is growing very skittish. Maggy weighs 10 lbs. and Sammy weighs 22 lbs. He has not hurt her yet, but I fear that his patience is growing thin, despite the fact that this is unacceptable behavior.
I don't know why she has started doing this, nor do I know what to do to get it to stop. I've tried the firm "NO," and not moving her at night. Neither have worked. I'm afraid she's jealous of the attention he gets during the day (which isn't much as he tends to keep to himself). This is especially concerning to me as we are planning on getting a new kitten next month.
PLEASE HELP ME!