Depends on where in the food chain the urine comes from. With bears in Alaska, what would they possibly fear? Most of the time they associate human smells with possible food anyways, thanks to the foolishness of many. Wolves not being quite the insatiable omnivores that bears are, and generally having mostly bad experiences with humans, it just makes sense.

Now, if you get something that starts chasing down and eating bears on a regular basis, that might be worth collecting. Of course then we have another new link in the food chain to contend with, eh?

Maybe Bigfoot pee might work???