I know this problem answer, say a reason to still be mixed benefit is public close.
One day this egg on of an explicit chamberlain falls, a big case was put to had collected bridge fee to the common people of associate with in either end of a bridge, common people is dare anger not dare character.
Then a foot outside the fair member that apply magic arts to let steps on aid into the case, the tremedous effort was expended to pull out the leg outside the member that wait after coming, his leg had turned money into the leg!
Member outside confused god, hastily to aid fair appeal. Aid is official say to him: "Treat can treat, but can change a leg only! But can change a leg only!!
Member outside want to feel chamberlain is right oneself most devotion, be about to change a leg with chamberlain, chamberlain is obliged to agree without method.
On the body outside the member that the leg that stewards then arrived, how does that chamberlain do? -- easy to handle, aid is official change the leg of a dog to chamberlain; How does that dog do? -- it may not be a bad idea does, aid is official the leg that changed a mud to do to the dog.
This is " henchman " origin, also be why the dog is in piddle when should carry the reason of the leg -- lest wetted bumpkin.
Of course this is work of movie and TV only just, real reason is more complex than this.Dog dog piddle carries of the leg it is fair dog commonly, bitch uses the means that crouchs mostly, the bitch that of course also few number stands to go alone especially also carries a little leg piddle.
Dog dog carries leg piddle is to leave his taste, indicate feudal. And what the leg carries is taller, what make water scatters is further, what odour sends out is further also.
2 it is to attract bitch, fair dog comes through this kind of means " aloud " announce oneself are a strong fair dog, will attract the opposite sex.
(top right corner pays close attention to I biscuit, everyday wonderful and ceaseless. )
