Pigs are another animal that work good on board ships. They are amazingly clean animals if you keep their environment clean. They’re naturally smart and love being around other people. And guard pigs are amazingly protective of their home making them an excellent organic anti-theft system. They become pork chops and bacon when their time is up, and genuine pig’s blood bullets are always in high demand. Pigs pay for their passage in so many ways it just makes sense to keep them around.