Well, I don't know about dinosaurs, but horses have small blood pumps in their hooves. So each step helps circulate blood. https://en.wikipedia.org/wiki/Frog_(h

Well, I don't know about dinosaurs, but horses have small blood pumps in their hooves. So each step helps circulate blood. https://en.wikipedia.org/wiki/Frog_(horse_anatomy) https://en.wikipedia.org/wiki/Frog_(horse_anatomy)