The Basenji dog is the only dog that is not able to bark.
4
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
The reindeer is the only mammal that can see UV light.
17
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12