Why Hydrophobia in Rabies?

Rabies used to be known as hydrophobia because it appears to cause a fear of water. Intense spasms in the throat are triggered when trying to swallow. Even the thought of swallowing water can cause spasms. This is where the fear comes from.

Why does rabies make your mouth foam?

Someone with rabies can produce a lot of saliva (spit), and muscle spasms in their throat might make it hard to swallow. This causes the "foaming at the mouth" effect that has long been associated with rabies infection.

Are dogs with rabies afraid of water?

Paralysis eventually sets in and the rabid animal may be unable to eat and drink. Hydrophobia (fear of water) is not a sign of rabies in dogs. This is a feature of human rabies.