I do not, however, know of any society that consumes animal urine - unless it's been processed back into water itself. Usually when I hear this it is the person's own and in a life or death situation.
That said, reading what they had to consume, it's safe to say that it was highly dangerous because animals can carry some of the STD issues, and it's just flat out gross.
I do not care that Rogen thinks that people should be willing to do anything to earn $50,000, but this is beyond questionable taste - it's a health hazard.
And I don't support any of the contestants doing it to get the money. They all should've walked, and if none did, none should get any money except for the time they were there (basically non-SAG pay of $75/day).