Barkley's Barnyard Critters: Mystery Tail (2006)

The hilarious hour-long episode follows the bipolar, beer-swilling dog, Barkley, and the Critters, the band he fronts. His rocker menagerie includes a vulture, a snake, a tracksuit-clad paranoid schizophrenic crow, a Buckethead-esque farm boy on harmonica, and a manic- depressive canine drummer.

Unfortunately the movie Barkley's Barnyard Critters: Mystery Tail is not yet available on HBO Max.