Forget the forest! We have housefolk who tend to all our needs!
Kittypets are house cats. They live with humans (Housefolk, twolegs, nofurs, upwalkers) and grow fat (compared to skinny Clan cats) on food that they don't have to catch or share. Some watch the Clans and wrinkle their noses with disgust. Others are interested, but don't stray from their homes. Others want to join but the Clans turn them down. Only one has ever been accepted, a cat named Tom. He was accepted into LightningClan as Flamepaw, then Flameheart. But that was a long long time ago, and now most kittypets stay away from the forest.