

Tokoyami from My Hero Academia has a bird head with human teeth.While they are evolved birds, it may be just one-off gags as they normally don't have teeth. The humanoid birds from Doraemon: Nobita and the Winged Braves often display teeth.The author later states that all the bird species in the verse with a species name starting with "Super" have teeth, because it's more "super" to have teeth than to lack them. Later, the bird Chuchuun, a Super Sparrow, appears and it has teeth too. The same goes for other Super Spot-Billed Ducks. Later on, he always has teeth when he opens his beak. Carue from One Piece, who is a so-called Super Spot-Billed Duck, at first only gets teeth when he is making funny facial expressions.For example, Dawn's Piplup normally has no teeth, but at times he is shown with them (noticeably when he grates them). Has been seen numerous times in the Pokémon anime, but justified in that the creatures are purely fictional.While her previous form, Biyomon, is a large bird with no teeth, Birdramon is a mixture of a bird and a dragon, allowing for sharp teeth. Digimon Adventure, justified when Birdramon.The Japanese Star Fox manga gave Falco teeth whenever he needed to look angry or cocky.Pet Shop flashes an evil grin at one point (although he shows no teeth), which Iggy notes shouldn't be possible. Lampshaded in JoJo's Bizarre Adventure part 3, when Iggy (a dog) battles Pet Shop (a falcon).
