Monster tweaks

Reverts some monster name changes.
Revert dementia symbol to '@', small description change.
Also a small tweak to forest cat spawn group sizes.
Remove guilt from the dog, cat, and bobcat. This could be re-added later when we have varying degrees of guilt, but for now I don't think killing a bobcat will make me as sad as killing  a child.
Raise most small (non-vermin) animal hp enough that low damage sources no longer gib them.