Lost Tapes/YMMV


 * Artistic License Biology: The flimsy justification given for rapid shape shifting of the Werewolf, a cursory situation of amphibian/insect metamorphosis and the minor changes of the Mandrill.
 * The Anaconda is an aquatic snake that can barely sustain its own weight outside of water, much less move and attack. The Megaconda episode takes the same route as the famous movies, making the giant anaconda into an arboreal creature, attacking from above and moving overland with incredible speed. And this isn't taking into account that a reptile predator is unlikely to eat more than once every few days, not attack and consume several victims over the course of an hour or two.
 * Complete Monster: While the monsters normally have a natural reason for attacking humans, food, protecting their turf, or revenge, the Poltergeist crosses the Moral Event Horizon, not only did he, he keeps telling the heroes to leave and right as they're about to do so,
 * The Evil Poacher from Bigfoot. He not only wants to kill the lead character, the way he talks to her implies that he wants to rape her..
 * Hell Is That Noise - In Skin-Walker, something sounds exactly like Brian's mother, and it's genuinely frightening.
 * The Wendigo's roar. Brrr...
 * Narm Charm - Sometimes, the episodes fall flat on their faces (often with blatantly supernatural creatures). Other times, they manage to hit some actual tension (one featuring the giant monitor lizard Megalania and the Bigfoot episode) in the direction. Watching someone suffer from Blood Poisoning is pretty terrifying since that sort of thing can happen when bitten by certain venomous animals. Still, nothing can grant forgiveness of the terrible acting in the opening of Lizardman.
 * Nightmare Retardant
 * Special Effect Failure: The werewolf from "Beast of Bray Road", you can clearly tell it's a man in a suit.
 * They Just Didn't Care: When a Supernatural Agent is at work in the show.