Animals with More than One Heart
Octopus or Squid
Octopus and Squid have 3 hearts in total, 1 systematic to go along with two 'gill hearts' that force blood to the gills.
An earthworm has 5 arches or hearts that are segmented and pump blood throughout its body.
The hagfish has 4 of them, one main 3 chambered systematic heart and 3 accessory pumps.