Seems a little rain was all he needed to grow, in short order he assembles an impressive animal entourage and falls in love with Kiri at first sight. Presumably by the end of the movie both know they are cousins, it doesn't make any difference, our last image of them is passionately kissing on top a rock outcropping. The Beastmaster has his work cut out for him, the evil priest must be killed, the evil army must be stopped, and he has to get his cousin. First you torture him into insanity, then screw studded leather armor and spikes into his flesh, finish out by putting a leech in his ear. King's bedchambers are not very well guarded, someone can easily sneak in with a cow.
Witches are extremely flammable.
Normal people burn pretty easy too. Ferrets are kleptomaniacs. If the hero chucks a razor sharp boomerang at you and misses, pay attention to it's return path. Great cats are perfect for picking up women. Never let a Bat, er Person, hug you.