It's actually called the 'grease gland', and they use that secretion to mark territory. You'll notice sometimes that they're rumblestrut (make a purring sound while waggling their bottom) and will drag their bottom on the ground. 
__________________
We are as gods to the beasts of the fields. We order the time o' their birth and the time o' their death. Between times, we ha' a duty. - Terry Pratchett.
"Men have forgotten this truth", said the fox, "But you must not forget it. You become responsible, forever, for what you have tamed. - Antoine de Saint-Exupéry
|
