Denmark has twice as many pigs as there are people.
66
Bats sleep 18-20 hours per day.
5
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16