To find out if a watermelon is ripe, knock it, and if it sounds hollow then it is ripe.
84
Over 10,000 birds a year die from smashing into windows!
-41
The original name for the butterfly was 'flutterby'!
121
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
Hummingbirds can weigh less than a penny!
12
Mexican Jumping Beans jump because of moth larvae inside them.
29
A baby eel is called an elver, a baby oyster is called a spat.
18
