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.
Giant and colossal squid have the largest eyes in the animal kingdom, about the size of a dinner plate.
French scientist Louis Pasteur developed pasteurization in the 1860s, which kills harmful microbes by heating liquids like milk and wine.