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.
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- Which animal has the densest fur?
“Sea otters have the densest fur of any animal, up to about a million hairs per square inch.”
Reference: Monterey Bay Aquarium
More from this shelf
Do sea otters hold hands?
Sea otters sometimes hold hands while sleeping so they don't drift apart.
Odd fact about polar bears
A polar bear's skin is black. Its fur is not white, but actually clear.