In Germany a man married his cat when he learned from the vet that she was dying.The article say that it's illegal to marry animals in Germany, which suggests that it might not be illegal to marry animals somewhere else. As it was, he went through a form of marriage with puss (or Cecilia as she is known to her husband) officiated by an actress. I've heard of people marrying people who are dying because they need to make sure of taking care of any children, or to avoid death duties and family problems over inheritance. The article doesn't say whether the cat had an independent income, or whether there were children or kittens between the German and his pet.