Poisonous Dart Frog

can grow up to 2-6 cm, brightly coloured. Has enough poison to kill 9 humans.

Polar Bear

An adult male weighs around 400–680 kg (880–1,500 lb), while a female weighs only about half of that. Polar bears are extremely powerful hunters they can easily rip limbs or crush a seals skull.

Cape Buffalo

buffaloes weigh 500-900 kg, cape Buffalo’s are reported to kill more people in Africa then any other animal.

Elephant

with male elephants growing up to 3.2 metres (10 ft) to 4 metres (13 ft), elephants can trample almost every other mammal, even a rhino.

The Saltwater Crocodile

An adult male saltwater crocodile’s weight is 880 to 3,300 pounds (400–1,500 kg), crocodiles have a bite measurement of 1000 pounds per square inch, they guy could tear any limb or snap any bone at easy.

Great White Shark

known as the world’s largest known predatory fish, although shark attacks aren’t very common. Sharks are known to eat dolphins, manta rays, fish, smaller sharks, and other objects unable to digest.

Australian Box Jellyfish

Is known as the most deadly in the animal kingdom it’s caused 5500 since 1954, this jellyfish has 15 tentacle’s each of which  has about 500,000 cnidocytes which are harpoon shaped needles that inject venom into the victim.

Asian Cobra

Although it’s not the most poisonous snake it does give 50,00 bites a year.

Mosquito   

Although it’s one of the most common and annoying pests it’s also the most deadly. Mosquito’s transmit 700 million disease a year, at least 2.5 million die every year.