Here are a few bumblebee fun facts from The Encyclopedia of Trivia
Bumblebees have smelly feet and leave a scent on the flower they visit to tell other bees there is no other nectar left.
Bumblebees don't have ears. They pick up vibrations through their bodies.
Bumblebees can fly at up to 30mph. The buzz is produced by their flight muscles.
The world's smallest mammal is the bumblebee bat of Thailand, weighing less than a penny.