The eyes other other mammals have some type of pupil that can dilate to let more light in. However, the eyes of rats and mice just seem to just have a large black pupil that doesn’t dilate or contract. Why is that?
In: Biology
They do actually have a pupil it’s just that usually you’ll only see it if you happen to see their eyes in the right light at just the right angle [this gives an example](https://howling-techie.tumblr.com/post/626462178223996928/ratichu-something-i-love-about-rats-is-their)
Latest Answers