Are you frightened of spiders? Do you dread being stung by a wasp or a bee?
Different insects are a problem for people living all over the world. Flies and wasps are a pest across the UK. If you've ever been to Scotland, you'll know how irritating midges can be. If you've been abroad on holiday, you might have had tablets to protect you against malaria, which you can catch from a mosquito bite.
But it's not just people who suffer from insect bites - animals do too. You might have heard of rabies, a disease that is carried by fleas settling on animals' skin and biting into their bloodstream.
This case study looks at an insect that attacks free-roaming animals and, as a result, threatens the livelihoods of many people in Africa - the tsetse (pronounced 'setsee') fly.