The black mamba and the blue-ringed octopus are among Earth's most venomous animals. Beyond that, they have little in common. One is known for its great size; t

The black mamba and the blue-ringed octopus are among Earth's most venomous animals. Beyond that, they have little in common. One is known for its great size; t

The black mamba and the blue-ringed octopus are among Earth's most venomous animals. Beyond that, they have little in common. One is known for its great size; t

When it comes to size, great white sharks and elephants are relatively similar, but if pitted against each other in battle, does one have an advantage over the

All of these animals—from the mostly innocent black widow spider to the deadly taipan snake—have one thing in common: they use venom, or poison, for defense