Which animal has three hearts?
- A. Komodo dragon
- B. giraffe
- C. cow
- D. octopus
56% of players knew the correct answer: D., octopus
It's true: octopuses have three hearts. Two of the hearts work exclusively to move blood beyond the animal’s gills, while the third circulates blood to the organs. The third heart actually stops beating when the octopus swims, causing the animal to tire quickly, which is why they prefer to crawl.
Listen and learn more about today's topic with Murray and Tamika.