> INTERESTING FACTS ON ANIMALS/BIRDS 1.Owls are the only birds who can see the colour blue. 2.A hummingbird weighs less than a penny. 3.A hippo can open his mouth wide enough to fit a 4 foot tall child inside. 4. An ostrich eye is bigger than its brain. 5. Starfish can re-grow their arms.In fact, a single arm can regenerate a whole body. 6.Dogs are capable of understanding upto 250 words and gestures and have demonstrated the ability to do simple mathematical calculations. 7.A mouse can fit through a hole the size of a ballpoint pen. 8.An octopus has three hearts and the colour of its blood is blue.