Benny the Mule

Benny the Mule is a minor antagonist in K-9.

Benny the Mule is a wanted criminal, who apparently has ties to drug lord Ken Lyman. Detective Dooley attempts to stake out a bar of his one day to find more details about Lyman's next shipment. His henchmen initially buy his story as a health inspector until the Mule himself shows up and deduces to his men that he is a cop.

Dooley almost meets his fate until his new canine partner Jerry Lee shows up and barks at them. The Mule laughs and throws a billiard ball at Jerry Lee, who in return intimidates the Mule by catching it, then chomping it in half. Next he throws a stick at the dog but it only provokes him and the Mule and his men are attacked by the dog.

When Jerry Lee bites the Mule's genitals, he refuses to surrender but Dooley interrogates him anyway, saying he has no other choice. The Mule finally reveals details of the next shipment before he is taken away by the police.