The other answers are correct but they also copy their mums once they’re old enough. I’m in the UK where it’s the norm to let your cats outdoors. When my neighbour’s kitten was old enough to be let out he used to follow my much older cat around and copy her. He watched my cat do a wee in the bushes and then copied her digging to cover it up. Just covering up his imaginary wee next to her! It was super cute, although my cat wasn’t that impressed with the intrusion.