Where did my sweet baby go?

Remember Gizmo? The sweet cuddly fuzzy little
love rodent that was impossible not to fall in love with?

Remember what happened to him when he got wet or ate after dark?

Well, I think I birthed a Gremlin.

Thing is, I can't quite figure out what it is that converts him to his disturbing alter ego. Like this morning when he was all set up to have a lovely day with Gran and instead began his 360-degree head-swivel exorcist-style about the time she walked in the door.

I think he can smell weakness.

I don't know which is worse: Jackson's insanely frustrating behavior or the glimmer of "Oh, payback is so much fun" in my mother's eye when she handed him off tonight and headed back home to her quiet and restful home...