Idk if “descendants of omnivores” counts because then you could exclude a number of critters like pigs for being “descendants of herbivores” and then ‘why do pigs have forward facing eyes?’
The obvious caveat is that pandas at the minimum don’t have selective pressure for side eyes or they have something pressuring stereoscopic vision even more similar to how aquatic animals have less selective pressure for forward facing eyes.
I would imagine the way pandas eat bamboo stalks is more visual than most herbivores and that alone could help them retain steroscopic vision.
Idk if “descendants of omnivores” counts because then you could exclude a number of critters like pigs for being “descendants of herbivores” and then ‘why do pigs have forward facing eyes?’
The obvious caveat is that pandas at the minimum don’t have selective pressure for side eyes or they have something pressuring stereoscopic vision even more similar to how aquatic animals have less selective pressure for forward facing eyes.
I would imagine the way pandas eat bamboo stalks is more visual than most herbivores and that alone could help them retain steroscopic vision.
I was trying to imply that pandas did it recently enough for such pressures to not have kicked in yet. Probably should’ve specified that a bit better.