Many cats might sleep more than ten hours but that’s not because they are lazy but it is in their nature.
It is a fact that they are quite active and they usually require a long time to recharge.
Actually, chasing a mouse or playing in the yard requires lots of energy, and having a good sleep to recharge never hurts the lifestyle.
This Persian cat with the name of Barnaby can be the sleep champion, even though he is not a mouse catcher at all. He just wakes up for a short time and then goes back to sleep. The only he cares about is his sleep, and disturbing his regular sleep routine is a sin.
To him, being a careless selfish cat is a normal way of life.