Sorry to hear that, bro. Loosing a cat that you're very close to is tough. I lost my buddy Murphy when i was 26. He'd been around for 19 years. I knew he was older than dirt, but it was still tough to deal with. One thing though, if he was foaming at the mouth that can be a sign of rabies, as it paralyzes the animal's throat muscles so it can't swallow anymore. Watch your other pets carefully.