There are over 255 different species of bumblebees in the world. The largest is the Bombus dahlbomii which can grow up to 4 cm (1.6 inches) long. The smallest is the Perdita minima who measures in at less than 2 mm.
Unlike honeybees, bumblebees do not die after stinging.
Bumblebees flap their wings 130 times per second. All that furious flapping in the flowers is what makes them such great pollinators.
Bumblebees are larger and furrier than honeybees, and more suited to colder climates. They are indigenous to North America, while honeybees were introduced from Europe.
Bumblebees produce far less honey than their European honeybee counterparts and also have much smaller colonies. Whereas a honey bee colony can grow to 50,000 inhabitants, most bumblebee colonies peak at less than 200. For more interesting facts about the life cycle of a bumblebee click here.