Armadillos found in the US nearly always give birth to identical quadruplets.
The largest bat colony in the world in Bracken Cave, Texas has 20
Dolphins can stay active for 15 days or more by sleeping with only
one half of their brain at a time.
Elephants are pregnant for almost two years.
Guinea pigs are neither pigs nor from Guinea.
Koala bears are not bears, they are marsupials.