How many hearts does an octopus have?
A) 1
B) 2
C) 3
D) 4
An octopus has 3 hearts – two pump blood to the gills, while the third pumps blood to the rest of the body. Interestingly, the heart that delivers blood to the body actually stops beating when the octopus swims, which is why they prefer to crawl rather than swim (it’s less tiring for them)!
