Despite appearances, Lefty and Watanuki are not slowly merging into one giant megacat.
Nor is this a common pose for them. They were asleep when I came into the room, and I suspect there was some separation between them when they conked out.
After all, cats are prone to Somnolent Oozing.
I actually have a couple photos like this in the Catma Sutra. But Mr. Ferguson and Nickel were a married couple.