Some ribbon worms will eat themselves if they can't find any food.
-33
A lion in the wild usually makes no more than twenty kills a year.
186
A female ferret will die if it goes into heat and cannot find a mate.
143
Humans and dolphins are the only species that have sex for pleasure.
61
To escape the grip of a crocodile's jaws, push your thumbs into its eyeballs. It will let you go instantly.
155
An elephant trunk has no bone but 40,000 muscles.
24
Emus and kangaroos cannot walk backwards.
26