Bees resort to biting when faced with pests, such as parasitic mites, that are too small to sting.
Close study of the biting behaviour has revealed that they secrete a chemical in their bite that stuns pests so they are easier to eject from a colony.
Tests suggest the chemical could also have a role in human medicine, as a local anaesthetic."
Honey-bees found to have bite that stuns
from BBC © 2012