My cat, Kiara, is 7 years old and until this year was strictly an indoor cat. Lately I've been letting her go explore outside, and she's been leaving the property for hours at a time. Today she was foaming at the mouth and shaking her head (presumably to shake the foam/saliva off) and acting "sick" (moaning, wanting to be near me, lying down). I can't remember if she got the rabies vaccine when she was fixed, but even so she hasn't had a booster. She seems to have stopped foaming. I also found a gel stool softener pill on the ground that was possibly bit into. Could it be the pill? a bug bite? rabies?