In nature, many interesting animals and creatures that we never even seen, only heard of them.
I want to show you 15 largest animal in the world, classified in different categories such as mammals, reptiles, birds, amphibians, etc.
The biggest animal of the existing - Blue Whale.
Blue whale (Balaenoptera musculus) is a marine mammal. With 30 meters in length and 180 tons or more in weight, it is - the largest known animal ever existing. Language blue whale weighs about 2.7 tons, the size of the average Indian elephant, and his heart weighs about 600 pounds and is the largest known in any animal. Not only that, the size of the heart of a blue whale is comparable with the car Mini Cooper, but it is also comparable in weight.