ELi5: How do some animals get enough nutrients out of eating hay or grass or a single variety of leaf for their entire lives?

Question

ELi5: How do some animals get enough nutrients out of eating hay or grass or a single variety of leaf for their entire lives?

In: 293

Answer 1

To add to DaSaw’s answer, notice how grazing animals are *constantly* eating? Like, how often do you see cows just standing around with their heads up? Almost never, they’re pretty much always munching on something. So in a sense the answer is “by eating a hell of a lot of it”.