What animals have 2 hearts? The systemic heart pumps blood around an octopus’s body, while its two branchial hearts pump blood through its two gills. Since octopus blood is very copper-rich, it’s exceptionally viscous. As a result, it requires a significant amount of pressure to pump blood through its body.
Do giraffes have hearts? A giraffe heart weighs on average 11 kilograms and (like in all mammals) is composed of have two halves, the right and the left, which are each responsible for moving blood around the body. The right ventricle of the heart only has to pump blood a relatively short distance to the lungs.
Why do giraffe have 3 hearts? Three hearts, to be exact. There is a systemic (main) heart. Two lesser hearts pump blood to the gills where waste is discarded and oxygen is received. They work like the right side of the human heart.
Do giraffes have 2 brains? The three brains of the adult male giraffes weighted respectively 722.7, 766.1 and 770.4 g, with a mean of 753.1 ± 15.23 g (Table 1). The body weights were similar with an average weight of 703.3 ± 50.4 kg. The EQ calculated with these means resulted in a value of 0.76 (Table 3).