When dragonflies mate, their tails form a love heart.
22
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Cats and dogs can hear ultrasound.
350
Early American humans hunted car-size armadillos and used their shells for houses.
12
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