Rabies is disease caused by a virus usually passed to humans via bats (in the US) but also raccoons, foxes, and skunks.
Symptoms involve the nervous system causing conditions such as anisocoria. Autonomic instability is manifested by fever, tachycardia, hypertension.
Classically, hypersalivation (foaming at the mouth) is seen. Hydrophobia (aversion to liquids) may occurs.
Once symptomatic, rabies is fatal.