If your cat has not had a drop of water for more than 12 hours, it is very likely that it is dehydrated. To check it, enter its skin between the shoulder blades and gently pinch it: if it takes a long time to get back into place, your cat is lacking water.

Dehydration is a symptom and not a disease : the fact that your cat is no longer drinking should lead to a consultation with the veterinarian to find the cause of dehydration.