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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- What is the Monterey Bay Aquarium's surrogate program?
“The Monterey Bay Aquarium pairs orphaned sea otter pups with surrogate mothers.”
Reference: Monterey Bay Aquarium
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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.
Do any two tigers have the same stripes?
No two tigers have the same stripe pattern, so researchers can identify individual wild tigers from camera trap photos almost like fingerprints.