Quotes 2017 #261

"Dial describes to me three types of walking. He holds up the first finger to further explain. 'You and I and bears are PLANTIGRADE. In other words, we plant our heels and toes and walk off our toes.' He holds up a second finger. 'Your cat and dog are DIGITIGRADES. They walk on their digits. Lastly a horse, wildebeest, or goat walks on its toenails. It's called UNGULIGRADE,' he adds, raising a third finger. 'Birds,' he concludeds, with admiration, 'do all of those things.'" (Jim Robbins, The Wonder of Birds)