| MEAT – EATER | HERBIVORE | MAN |
| Has claws | No claws | No claws |
| No skin pores, perspires through tongue | Perspires through skin pores | Perspires through skin pores |
| Sharp front teeth for tearing, | No sharp front teeth | No sharp front teeth |
| No flat molar teeth for Grinding | Has flat rear molars | Has flat rear molar. |
| Intestinal tract 3 times body length so rapidly decaying meat can pass out quickly | Intestinal tract 10 – 12 times body length | Intestinal tract 12 times body length |
| Strong hydrochloric acid in stomach to digest meat | Stomach acid 20 times less strong than meat-eaters. | Stomach acid 20 times less strong than meat eaters. |