Various things can cause stress in cats. They are similar to the things that cause anxiety in humans, such as a remarkable change in routine or environment. Shifting into a new house or introduction of a new person at home can lead to anxiety in cats.
Changes in your pet’s daily routine also lead to stress. If you socialize a kitten at a very young age, then it may develop anxiety in your pet. If you are spending much of your time outside the house and are not available to your kitty all the time, then it may lead to separation anxiety in your feline friend.