Our beloved planet has seen giants that dwarf most animals alive today. These massive creatures lived across different time ...

They're most widespread in Russia, with a population of around 30,000 to 50,000 animals ... It's tough to say how large the biggest Bengal tiger ever was since overhunting and lack of prey ...

Here is how whales ended up becoming the biggest of them ... So it can take as long as 10 seconds to close them again. More from News Whales are the largest animals to ever exist on this Earth ...