I have two adult cats (4 years old) male (Pounce) and female (Lucy). They have been together since they were 8 weeks old. For years they've been best of friends. They play together, sleep together...follow each other around the house..etc. They've both been fixed and both are declawed. They are strictly inside cats. Both visit the vet regularly and are up to date on all their shots. My problem is...for the past few months, Lucy has been getting quite snotty with Pounce. If they're playing and she's had enough, she'll hiss and swat at him until he runs away. I know this is normal behavior for cats BUT..sometimes Pounce doesn't do ANYTHING. Lucy will be lying on the floor and he'll just WALK BY and she's hissing and biting at him. They don't hang out together like they used to anymore and from what I can see..it looks like its mostly Lucy's fault. Pounce isn't exactly "the sharpest knife in the drawer"...and sometimes he's not bright enough to back off when she hisses at him...therefore he's got a few battle scars from her. Does anyone know what could be causing this? or what I can do to stop it?