Animals We Had No Idea Were Actually Shockingly Massive

Fully Inflated Horse Lungs Explain Why They Can Run So Long And Fast

It's safe to say that this horse was definitely not a smoker. These lungs are enormous, and they are required so that horses can run for long periods of time without getting tired. You would never realize how much larger some animal organs are to help them with speed and stamina.

We wonder what happened to the horse considering its lungs look to be in perfect health. Although we are not vets and those dark spots could have been the cause of death. Nevertheless, it is crazy how large they are.