Keeping a cat inside all the time may keep it safe from dogs, cars, and malicious humans, but it can also keep your cat from experiencing the thrill of exploring and hunting. So to keep an indoor cat happy, consider different ways to making being indoors all the time more interesting.
First, provide plenty of perches for your indoor cat to peer outside and watch the world including birds, squirrels, and other wild life roam around. Just watching animals roaming around can keep your cat occupied.
Second, consider getting toys to play with your cat. The idea is that a tired cat is a happy cat since a tired cat won’t have time to feel bored in any way.