Octopus contains three hearts, one systemic heart, and two branchial hearts
Image Source : pixabayCuttlefish have three hearts, 1 systemic heart & 2 branchial hearts and it possess a closed circulatory system
Image Source : PIXABAYCertain species of cockroaches on earth have multiple hearts
Image Source : PIXABAYEarthworm does not have a heart, but it possesses 5 aortic arches that pump blood through its body
Image Source : PIXABAYHagfish contains four hearts, one systemic heart and 3 auxiliary hearts
Image Source : pixabaySquids possess 3 hearts and its systemic heart pumps blood around its body, while 2 branchial hearts pump oxygen through its gills
Image Source : PIXABAYNext : Stunning pics of Russian Soyuz MS-24 spacecraft being prepared for launch