20 Lesser-Known Facts About Animals That Are Utterly Adorable

New Study Reveals That Bumblebees Will Roll Wooden Balls For Seemingly No Other Reason Than Fun, Becoming The First Insect Known To 'Play'. In a new study, the team placed 45 buff-tailed bumblebees (Bombus terrestris audax) of different sexes and ages in an arena with a single entrance. There was a clear aisle from the entrance to pollen and sugar water in the back of the chamber, but the insects had to pass between two adjacent rooms with 18 colourful wooden balls to get there. One room had free-moving balls, while the other had balls that were glued down.