The largest mammal that ever lived is the blue whale. It is bluish gray, darker on the top than on the bottom.
The blue whale is the largest mammal on Earth. It is also the largest animal known to have ever lived. It is not, however, the largest organism, which is a disputed title between some plants and fungi.
It is the blue whale. This mammal is also the largest animal that has EVER lived in the history of Earth. Yes, These creatures are indeed larger than I any Dinosaur that ever lived!A blue whale has an average length of 80 feet and a weight of 120 tons!
whale shark is not the largest mammal, but the animal.blue whale is the largest mammal ever known.
The largest mammal on earth is the blue whale, which can weigh up to 200 tons, which makes it the heaviest known animal to have ever lived.
The largest prehistoric mammal ever was the Indricotherium a prehistoric rhino like mammal the height of a modern giraffe and weighing 12 tons.
Not only is the Blue whale a mammal it is the largest mammal and possibly the largest animal to ever inhabit the Earth.
The indricothere was the largest mammal
I don't know the one that ever exsisted but a polar bear is the largest land mammal that is still alive today!
Blue whale........ DURHRHRHRHRH