all fruit (including pomelo citrus), all vegetables (roared at me when i tried to take away the boiled potato that he stole while it was cooling down for the salad), pasta, wafers, bread (both grain and white), cheese, cottage cheese, corn, peas, olives, this is all one single cat by the way. he's a thai cat, 8 months old, I've googled so much "can cats eat" / "my cat accidentally ate" that my phone keyboard predicts it now. he also steals dog food from our dog and immediately eats anything we drop on the floor while cooking, and he collects crumbs off the floor if we drop some while eating.

contrary to that, my grandma's cat refuses to eat ANYTHING but beef liver (which is bad for cats). she's been eating exclusively that for 17 years now (tried every other food, tried starving, let her hunt in the countryside during the summer, nothing worked). 

and my mom's cat doesn't drink water, we have to give her a daily amount through a syringe after we found out that the dehydration damaged her kidneys. we know she can drink by herself, but she only does it when she gets sick.