Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Dogs sometimes fake being sick to get attention.
26
One in three dog owners say they have talked to their pets on the phone.
427
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
The male seahorse carries babies and 'gives birth' to them instead of the female.
7