How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
Reference: Smithsonian Ocean
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
Male seahorses give birth. The female deposits eggs into the male's pouch, and he carries them until they hatch.
Chameleons can move their eyes in two different directions at the same time.