Top 10 Plants and Creatures with the Most Painful .

Gympie Gympie: There have been stories of victims killing themselves to escape the pain, which is why this plant is nicknamed the suicide plant.

Box Jellyfish: Box jellyfish are cnidarian invertebrates distinguished by their cube-shaped medusae.

Southern Flannel Moth Caterpillar: They're also seen in the U.S. and their cuddly looks hide a dark secret, their furry appearance is made up of urticating hairs that. 

Executioner Wasp: The polistes carnifex or executioner wasp is the largest neotropical paper wasp in the world, and is noted as having amongst the most painful of all known stinging insects.

Stonefish: t is one of the most venomous fish known. They are found in the coastal regions of the Indo-Pacific.

Crocodile: The term crocodile is sometimes used even more loosely to include all extant members of the order Crocodilia, which includes the alligators .

Amazonian Giant Centipede: Known as scolopendra gigantea, they live in the Amazon rainforest and grow up to 30 cm, making them the largest centipedes in the world.

Giant Desert Centipede: Also known as the scolopendra heros, the giant desert centipede lives in the western U.S. grows up to 20 cm, and has a bite you wouldn't forget.

Stingray: A sting from it involves a stab at the beginning along with bleeding, and while the initial stab is painful, it's nothing compared to the true onset of pain that comes.

Platypus: The platypus, also known as the duck-billed platypus, is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania.