Insect bites and stings, like those from ticks, chiggers, flies, ants, bees, wasps, hornets and mosquitoes. Spider and scorpion bites and stings. Like those from a variety of spiders, the more famous being the black widow and the brown recluse, and a variety of scorpions. The next is marine life stings. This can be from jellyfish, Portuguese Man of War, or stingrays.
Snakebites can be from any number of snakes, both venomous and non-venomous.
And finally animal bites from little critters like bats, rats, squirrels and chipmunks. Insect bites from fleas, flies, ticks, chiggers, mosquitoes and others are pretty evident. Ticks and chiggers may be found still attached. Larger black flies, horse flies, and fire ants may cause a sharp pain when they bite and leave a small welt. Fleas, May flies and mosquitoes are more insidious, slowly torturing you with itchy bites.