Animation Domination High-Def (ADHD), Fox's new online and late-night cartoon comedy block, pitted the Internet's grumpiest cat against the original grumpy cat on Monday.
In the clip above, Garfield challenges Grumpy Cat to a grump-off, during which the felines wreak havoc in offices, on babies, in sandboxes and on birthday parties "to see who's the grumpiest cat of all."
"You think you're the only grumpy cat in town? I was a hater before you were even born," Garfield says in the clip.
ADHD premiered on Fox on July 27 and airs Saturdays from 11 p.m. to 12:30 a.m. ET. The late-night block serves as the on-air component of Fox’s digital, multi-platform animation network.
Watch the cats duke it out and then let us know what you think about the showdown in the comments.