what can cause foaming at the mouth
Animals who have difficulty swallowing will appear to hypersalivate or foam at the mouth. Drooling or foaming at the mouth can be a sign of poisoning. Hypersalivation is a side effect of some medications. Infection with rabies virus is perhaps the most famous cause of drooling or foaming at the mouth in cats and dogs. Rabies is rare in animals that have been vaccinated.