National Insect Week returns in 2020
The BBKA was set up in 1874 to promote and further the craft of beekeeping and to advance the education of the public in the importance of bees in the environment. It is the UK's leading organisation representing beekeepers.
There are lots of contenders here – possibly the pretty red and blue rove beetle Paederus – very, very tiny amounts of its poison have been used to cure chronic ulceration in people. Ladybirds are pretty poisonous (and pretty) and can bleed foul-tasting poisonous brightly coloured blood from their knees.