In the early stages of life kittens twitch or make other funny motions simply because they are growing! They grow fast, and their muscles need to be constantly engaged in motion. This happens even when they sleep!
Nine is a very fast growing kitten and is already a big boy at the sweet age of 5 ½ months. He is a Norwegian Forest Cat, and he will take about 3 years to fully grow. He is very active when he is awake. So, he does exercise his muscles a lot, promoting their growth while he sleeps as well.
Most of the time Nine (Ni Lille Mann Monark Undre Stovier) sleeps on his back. Naturally, he stretches his paws into the air. In this video he amused us with a drumming session on his invisible sky drums.
It is hard to say for sure if kittens dream at the early age. Since the cat sleeps about 16 hours a day, then majority of growth happens during the sleep. Some kittens would rotate their paws more often than stretch them. Some kittens would “suckle” on air. As long as the kitten is not suddenly twitches and “freezes” – which could be a sign of a seizure, or does not move at all (some say this could be a sign of a kitten being unhealthy), enjoy while you can! When they grow older, they usually just snore really loud.