Cats cat go weeks without food and survive. This is non optimal, but we're in the context of "do cats die without food for a day". No. Nada. Hibernation is

Cats cat go weeks without food and survive. This is non optimal, but we're in the context of "do cats die without food for a day". No. Nada. Hibernation is for months, and few mammals do it. All mammals fatten up for the winter (or dry season).