Pigs are some of the cleanest animals on Earth. The reason for this is that they refuse to excrete near where they eat or sleep. More »

Although there is no official ranking of cleanest animal, rather surprisingly, pigs are one of the cleanest animals in the world, according to PBS.org. They are tidy creatures, separating their sleeping and eating areas ... More »

www.reference.com Pets & Animals Pets

While the bacteria content of every animal's mouth is unknown, there has been plenty of speculation about which animal has the cleanest mouth. Although it may seem easy to compare, according to an interview on Live Scien... More »

Although there is no official ranking of cleanest animal, rather surprisingly, pigs are one of the cleanest animals in the world, according to PBS.org. They are tidy creatures, separating their sleeping and eating areas ... More »

www.reference.com Pets & Animals Pets

The strongest animal on Earth is the blue whale. The blue whale is also the largest creature in the entire world. More »

The smallest animal on earth is the tardigrade. The tardigrade is also known as the moss piglet or water bear. More »

The slowest living creature on Earth is the sloth, which is an herbivorous mammal that is primarily found in South and Central American rain forests. Sloths are especially slow on land because they have weak hind legs th... More »