What is the distinguishing characteristic for ungulates? you can pick more than one. a. hooves b. legs longer than torso c. horns or antlers d. prehensile tail

when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.  

try going vegan or the palyo diet!