Bumblebees rolled a ball under an out-of-reach flower and climbed on it to access a reward, according to new research.

The insects solved the novel problem spontaneously without training, demonstrating what scientists call insight or spontaneous problem-solving.

The finding suggests tiny insect brains can support surprisingly flexible behavior that was previously observed only in apes, elephants and some birds.

AI-generated summary was reviewed by a CNN editor.

German psychologist Wolfgang Köhler set up a famous experiment more than 100 years ago that changed how scientists understand animal intelligence and the power of insight — or spontaneous problem-solving.