Yesterday when we got home Gilligan was fine-ignored Serenity, sniffed her, but didn't growl/hiss.
Today he has been growling and hissing and even swatted at her. Play is normal between those two-I know play swats, and I know aggression swats, and he's giving her the aggression swats. Why this shift all of a sudden?? I really don't know what's going on with him. He's seriously having some issues with her and she got a clean bill of health from the vet yesterday so I know it's not that he senses she's ill. He hasn't been chummy with her since her vet visit last week and today it's like almost a 180 from yesterday. I just don't know how to figure out what is bothering him. Will I ever????