Animal Planet is unleashing monsters during the week of May 18th with specials like Man-Eating Zombie Cats, Devoured: Man-Eating Super Snakes, the season finale of River Monsters and, the headiner, Animal Planet’s first b-movie from The Asylum. Shannon Doherty stars in Blood Lake: Attack of the Killer Lampreys as the residents of small town are terrorized by a swarm of vicious lampreys which attack from seemingly every source of water. Christopher Lloyd, Zach Ward and Jason Brooks co-star and it will debut on Sunday May 25th to cap off the week long horror fest. Check out the trailer by following the link below: