I have a goat that is 11 years old. He has been neutered since 1month old. He has all of a sudden grew a huge beard. He now sprays himself with his urine and licks it. He wants to hump everything that moves including our rabbits, ducks and even makes passes at my small dog. He has never acted like this before. His buddy is the same age and is also neutered. He doesnt act like this. The other goat drives him crazy with the mounting. Is it some kind of defficiency in his diet?