He’s a very large cat — and when we say ‘large’ we’re talking size-of-a-cow. He lived a regal life of royal splendor in a cave near Knowth on the Boyne, attended by fawning felines and kitty minions.
If you think this all sounds cute, be warned. One day, Senchan, the Chief Bard of Ireland, mocked him in a poem — and was never heard from again.
So it is best to err on the cautious side and regard IRUSAN as no Earthly type of mog.