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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- Do orcas go through menopause?
“Orcas are one of the few species besides humans known to go through menopause.”
Reference: Current Biology
More from this shelf
What is the largest dolphin?
The orca, also called the killer whale, is actually the largest member of the dolphin family, not a true whale in the everyday sense.
What mold produces penicillin?
Penicillin comes from Penicillium mold, the same group of molds you might find growing on old bread or fruit.