text: There are varying opinions on the topic.\n\nSpiders and Snakes have the most venomous but you have to consider, not only the strength of venom, but the quanity delivered, the frequency of a human encountering a specific species, and the aggressiveness of the species. \n\nThat being said, the most dangerous snakes and spiders are almost all in Australia. The Taipan or Brown snakes and the Funnel Web Spider top out the lists generally.\n\nThe most forceful bite, although non venomous is the aligator snapping turtle. You can see this performed on National Geographic's Dangerous Encounters: Bite Force (look for a showing in the future). They showed this to be stronger than that of the Great White Shark a common misconception of the most forceful bite.