Highly deadly and twice as ugly, the scorpion is a nasty critter that is probably responsible for more deaths per year than recorded, due to the isolated places they hang out and probable lack of access to antivenin. However, out of an estimated 1,500 species of scorpion worldwide, only around 25 are regarded dangerous.

Responsible for:
An estimated 800-2,000 fatalities a year.

Hangs out in: Worldwide;
particularly Africa, the Americas and Central Asia.

Method of dispatch:
Scorpions paralyse their prey by pumping deadly venom through the obvious curved stinger at the end of their tails. As with all venom, humans are particularly susceptible if they are allergic - though the African spitting scorpion, who scuttles around Africa, is the most venomous, as it is able to spray venom up to a metre. Yuk.

Useful avoidance techniques:
Scorpions become active at night and lie low during the day, so be sure to shake out any bedding, clothing or anything close to the ground before use. Be vigilant at night and wear thick socks.