What animals have more than 1 heart?

Five Animals with More Than One Heart

The Octopus is well-known for having multiple hearts. In addition to this, certain species of cockroaches also possess more than one heart. Furthermore, the Hagfish, a type of marine animal, has an impressive four hearts. Another example includes the Earthworm, which features a heart-like structure known as an aortic arch. Lastly, the Squid is another creature that boasts multiple hearts.