Cat is on fish oil for dehydration but is drooling?

If the cat is drooling it may be a sign of teeth problems, and abscess in the mouth, or problems with it's throat. It may also just be drooling to drool. However it would be best to take it to the vet as soon as possible to make sure it is not something serious that your kitty is suffering with.
If the cat is drooling it may be a sign of teeth problems, and abscess in the mouth, or problems with it's throat. It may also just be drooling to drool. However it would be best to take it to the vet as soon as possible to make sure it is not something serious that your kitty is suffering with.