Hosted on MSN
After humans, this mammal is the most populous, and 5 countries with its thriving population (no, not cows!)
If you thought after humans, the second most populous mammal on Earth is cows, or maybe dogs, we have a surprise. Nope—it's rats. As per the worldatlas.com, there may be as many as 8.7 million species ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results