An adult cat can hold their pee for 24-48 hours; however, this isn’t ideal since most cats have to urinate a minimum of twice daily. If you’re traveling by plane or train, ensure there are sufficient stopovers for your cat to use a litter box.

It’s unsafe for a cat to hold their bladder for over 48 hours since it can cause toxin build up, a ruptured bladder, or kidney failure.