The animal responsible for the most human deaths worldwide is the mosquito.
200
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
The female pigeon cannot lay eggs if she is alone. In order for her ovaries to function, she must be able to see another pigeon.
65
At birth, a panda bear is smaller than a mouse.
40
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
