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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- Why are manatees called sea cows?
“Manatees are called "sea cows" because they graze on plants.”
Reference: US Fish and Wildlife Service
More from this shelf
What are manatees most closely related to?
The manatee's closest living relatives are elephants.
Fact about the prairie dog language
Prairie dogs, those little pups popping in and out of holes on vacant lots and rural rangeland, are talking up a storm. They have different "words" for tall human in yellow shirt, short human in green shirt, coyote, deer, red-tailed hawk and many other creatures.