Definitely not normal for cats and is a telltale sign of a problem - most likely one of these 4 things. One of them is a situation that could affect your own health, too. Here's the very first thing I'd do if it were my kitty. Even then, you'll probably need to enlist the help of your vet.
When your cat stops eating, it's a big deal. Unlike dogs, a kitty not eating for as little as 16 hours can suffer from a life-threatening cascade in which her body starts sending cells to the liver to convert to energy. Don't wait until it is too late - do these five things now to entice her to eat.
Do this wrong, and your pet might not bite or bark. But that doesn't mean you're not causing harm. Believe me, this is something countless well-meaning pet parents get wrong. And it can mean the difference between comfort and trust, or injury and great harm.
If your cat especially suddenly develops a ravenous appetite, watch out, it could be any of these 12 conditions. And if you make the mistake that many owners do and just feed your pet more food, if it's this condition, she can literally starve to death. Please be aware of the signs.
The jury is still out on whether this brain parasite associated with certain household pets is causing mental illness in humans, but there does seem to be a link between the infection and schizophrenia. It’s known to change the behavior of rodents, and now wolves at Yellowstone.