This scorpion kills most people. These stings can cause fever, unconsciousness, seizures, and paralysis in youngsters and those with impaired immune systems.
On the sides of its elbows, this species bears a poison. They also take the venom into their lips and combine it with saliva to make a lethal mixture.
Several U.S. rural and urban areas have cougars. Cougar attacks are rare but reported. A mother's kittens are usually attacked when someone gets too close.
They are exceedingly aggressive, incredibly swift, and attack without provocation. If spotted, there is nothing you can do but hope for the best.
When they attack, gorillas may do considerable damage. A 400-pound mature guy has keen teeth and strong hands.
Although stingrays are not violent and would rather escape than attack or even defend themselves, their poisonous tail spines are no laughing matter.
Being largely herbivorous, they are violent. Hippopotamuses and Cape Buffaloes are Africa's most hazardous creatures. They attack humans without provocation and total autos.
Unlike several of the other creatures on this list, the largest carnivore does not fear humans. Without natural enemies, the polar bear is a frightening beast.
They are known to transmit diseases to humans directly. Included among these viruses are leptospirosis, pulmonary sickness, and the plague. All are potentially lethal.