The Man From P.I.G. books

Bron Wurber is a pig farmer with a degree in animal husbandry and a doctorate in galactic politics. His pigs are specially trained and bred, and form a special taskforce, P.I.G. - the Porcine Interstellar Guard. Their task in this humorous tale is to help the people of the planet Towbri, and defeat the monsters of the Ghost Plateau.