One of the main attractions in Pyongyang, North Korea, is a female chimpanzee named Azalea who generally goes through about 1 pack of cigarettes a day.

At birth, a panda is smaller than a mouse and weighs about four ounces

Pandas are considered to be "endangered," with about 1,600 in the wild and another few hundred in captivity (some estimate there are more like 3,000 pandas in the wild). Their low birth rates, males' reluctance to mate in captivity (keepers have even tried panda porn to get them in the mood) and high mortality rates (about a quarter of males and a fifth of females die in their first year, by some accounts; others put the figure higher) aren't helping.