Kon Dog is a dog version of Kon Kujira that appeared in "Hair Today, Kon Tomorrow". He was the result of Kon spilling hair tonic on his head, getting zapped by a magic wand and hitting his head, leading Kon to wake from amnesiac unconsciousness and believing himself to be a dog.
Kon Dog has the same body shape as Kon, except he is covered in thick purple fur. His appearance resembles that of a real dog very well, as no one is able to tell he isn't actually a dog, even his twin brother Kin.
Despite actually being a human, Kon Dog behaves exactly like a typical dog, in fact he is shown to perform better than other real dogs. He pants and runs on all fours like a real dog, is very playful as he was eager to play fetch and will lick others as an act of friendship.
- The gag of Kon's lack of intelligence fitting the drummer stereotype is taken to the extreme, as now he is not only stupid, but an animal as well.
- Oddly Kon Dog has a little tail as well.