The Basenji dog is the only dog that is not able to bark.
4
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Nicole Kidman is scared of butterflies.
65
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23