The colossal squid has the largest eyes in the world.
4
The octopus does not have a blind spot.
273
The seahorse is the only fish to have a neck.
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Drivers kill more deer than hunters do.
660
Only 3% of bird species have penises.
0
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