Lakshmi.Mabrook said:
I know dogs have 2D vision for sure, which is why they can't tell the distance of an object; if that relates to what they can actually see or not and if that has anything to do with the pupil or formation of their head is unknown for me, I'm not much of a professional in this stuff lol.
Navigating a 3 dimensional world with only 2 dimensional vision seems like an awful waste of brainspace to me, it gives you useless information, and vision takes up an awfully disproportionate amount of brain power. I can't say for sure they have vision of one type or another as I'm not a expert on dog vision, but I can say I'm pretty sure that dogs have some working model for depth perception.
Human depth perception is a very complicated thing. Animals can have some of the processes that account for the sum total of human depth perception, and see similar to us without seeing the same.