Concerning Cat’s Playtime.
Cats, being carnivores, (which are the most playful mammals) base their play on rehearsing the skills they need to survive as a predator such as hunting, fighting, and killing. When kittens play chase, they play the roles of pursuer and pursued switching frequently and learning the life of a predator. Obviously sometimes a kitten might get a meager scratch or bite but it is rare that they would get injured during play. Playing, cats are never scared or distressed and it is obvious that cats enjoy interacting in this way. If you only have one cat, make sure that your cat is not bored by giving it toys or letting it outside.