It’s Hobbes the cat! He’s buddies with Calvin, of course, and he lives with Michelle Knee, Software Test Pilot.
While Calvin’s nickname is “bumper car,” Michelle writes:
We won’t discuss Hobbes’ nickname considering he got it from waking us up at 4:30 am to ensure we get up on time… he is more than an hour early. :D He is our clock.
The two cats have their own Twitter account: @calvinhobbescat.
Hobbes is, like Calvin, a Ragdoll. Floppy and fluffy! And such a Very Good Kitty who can tell time!