One of the strangest snakes was described as a new species in 2006. The spider-tailed viper is from Iran. This snake has a spider-like appendage on the end of its tail that it uses to lure in birds. The deadly viper lies perfectly still, well camouflaged among the rocks, just moving its tail end to simulate a spider walking about. It’s just a matter of time before an unsuspecting bird flies in to grab what looks like a spider. When it does, the viper bites the unfortunate bird and holds it while its venom slowly kills it. YouTube has a fascinating video of this snake luring in and grabbing a bird.