It's normal for cats to cry. Cats have more developed tear ducts than humans, and their nerves are very sensitive, so they may cry even when there's nothing wrong. Cats are also emotional animals. If a cat experiences something very upsetting—such as the death of its owner, being bullied by its owner or others, or being sick and uncomfortable—it will cry.
However, it's also important to observe whether the cat is sick. Feline rhinotracheitis is a serious infectious disease in cats. Symptoms include sneezing, runny nose, and increased eye discharge, making the cat appear to be tearing up. Pet owners should take their cats to the vet immediately, otherwise the consequences can be severe.
