Pose bias? Most pictures of animals like penguins are face on (I think they're mainly at 45°, and birds are general profile; so perhaps it's a more generalised

Pose bias? Most pictures of animals like penguins are face on (I think they're mainly at 45°, and birds are general profile; so perhaps it's a more generalised bias)? Or perhaps the 'recognisable' is correlated with face-on?