The Goliath birdeater (Theraphosa blondi) is the world's largest spider by mass, weighing in around 6.2 oz (175 g). It is a type of tarantula. The spider can bite and sometimes delivers a venom comparable to that of a wasp sting.
The Biggest Spiders In The World
It's deadly to small creatures, but the Goliath's venom is not lethal to humans. A bite would sting about as much as a wasp's. The giant spider is a delicacy in some parts of South America—though its urticating hairs are carefully singed away before the spider is roasted in banana leaves.
Tarantulas are quite docile and rarely bite people.
They do not have venom glands, fangs or any other mechanism for chemically subduing their food. Therefore, they do not have injectable toxins. Some have defensive secretions that might be toxic to small animals if ingested. So, for these daddy-long-legs, the tale is clearly false.
The speediest spider on Earth is the desert-dwelling Moroccan flic-flac spider (Cebrennus rechenbergi), which can reach speeds of up to 1.7 m/s (3.8 mph) when trying to escape predators.
Phoneutria are poisonous to humans, and they are considered to be the deadliest of all the world's spiders.
Top Ten Scariest Spiders
Oct 17, 2012
Wolf spiders don't pose a threat to people. It is possible to be allergic to a wolf spider's venom, but they are not poisonous. Since wolf spiders are large, their bite may be painful. If you have mild pain, swelling, or itchiness around the bite, it shouldn't last long.
The blue-ringed octopodes (Hapalochlaena spp.) produce tetrodotoxin, which is extremely toxic to even the healthiest adult humans, though the number of actual fatalities they have caused is far lower than the number caused by spiders and snakes, with which human contact is more common.
The black mamba, for example, injects up to 12 times the lethal dose for humans in each bite and may bite as many as 12 times in a single attack. This mamba has the fastest-acting venom of any snake, but humans are much larger than its usual prey so it still takes 20 minutes for you to die.
The world's most venomous fish is a close relative to the scorpionfishes, known as the stonefish. Through its dorsal fin spines, the stonefish can inject a venom that is capable of killing an adult person in less than an hour.
The two-step snake is the nickname that was given to the many-banded krait by American soldiers during the Vietnam War. The many-banded krait was so-called the two-step snake after a myth was circulated that a soldier was bitten by one, and the venom had killed him within two steps of the attack.
Australian box jellyfish
The Australian box jellyfish is considered the most venomous marine animal. They may not look dangerous, but the sting from a box jellyfish could be enough to send you to Davy Jones's locker-a watery grave, that is.
The inland taipan
The inland taipan (Oxyuranus microlepidotus) is considered the most venomous snake in the world with a murine LD value of 0.025 mg/kg SC. Ernst and Zug et al. 1996 list a value of 0.01 mg/kg SC, which makes it the most venomous snake in the world in their study too.
This includes various types of cobras, kraits, saw-scaled vipers, sea snakes, and pit vipers for which there are no commercially available anti-venom.
the black mamba
After the king cobra, the black mamba is the longest venomous snake in the world. It is also the fastest-moving snake in the world, reaching up to 23km/h. The snake although called Black Mamba is not black at all!
An unlikely tale, perhaps—yet Ireland is unusual for its absence of native snakes. It's one of only a handful of places worldwide—including New Zealand, Iceland, Greenland, and Antarctica—where Indiana Jones and other snake-averse humans can visit without fear.