Poison Dart Frog. This frog is probably the most poisonous animal on earth.The 2 inch long (5cm) golden poison dart frog has enough venom to kill 10 adult humans or 20,000 mice. Only 2 micrograms of this lethal toxin (the amount that fits on the head of a pin) is capable of killing a human or other large mammal. They are called "dart frogs" because indigenous Amerindians' use of their toxic secretions to poison the tips of their blow-darts.
The poison arrow frog is the most poisonous amphibian in the world.
which is the most dangerous poison easily available every where
Man
Piranna
The most dangerous type of frog is the golden poison frog. Its poison is capable of killing in excess of ten men.
The black snake.
As always, the most dangerous creature found in the Sahara is man.
Oh, dude, the most dangerous "creacher"? Are we talking about some mythical creature or a typo for "creature"? Either way, I'd say the most dangerous creature is probably a mosquito because those little suckers can carry diseases and ruin your summer BBQs. Watch out for those tiny terrors!
The most dangerous deep sea creature is the Sea Wasp. A deadly jellyfish. The slightest touch of their tentacles creates a permanent rash and horrible pain. Any harder and your toast.
mustard gas tear gas poison gas
hydrogen cyanide(gaseous HC)is odourless and kills in seconds
One of the Most poisonous animals is the Brittle-Sea Star. This is a question of much debate as certain animals with extremely toxic poison deliver only a small amount when some with lesser poisons deliver many times a necessary quantity.