Stare at a light for 5 mins at least. (10 mins works best!)
Most likely.
Hydrophobia as in rabies? There's no cure for it. As for hydrophobia as in not wanting to get into the water, if the animal responds well to rewards, you could try that. Punishments will only...
Cure means to solve the problems causing the disease and thereby become well again.
cure (a treatment that removes the underlying cause of a condition)