@lnxw48a1 Since I have a degree in Biology and have kept rabbits, it's a word I knew. I have also used it in conversation - with the daughter who just got *her* degree in Biology ;-) There are some great conversations in this household!
I believe that because digestive systems tend not to be 100% efficient, there's a myriad of niches out there for the Dung Beetle and others of a similar persuasion.
Interesting subject!