One in three dog owners say they have talked to their pets on the phone.
427
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Dolphins have names for one another.
18
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The largest earthworm on record was found in South Africa and measured 22 feet.
151