The blue whale is generally believed to be the largest animal that ever lived. But there has been a jellyfish that was bigger than the blue whale. It was a lion's mane jellyfish found on the shore of Massachusetts Bay in 1861.
The Blue Whale is believed to be the largest species ever to exist on Earth.
Well,the largest thing ever eaten by a green anaconda was a hippo..a female 3 year old hippo(:-apv
It would have been some sort of dinosaur of some sort but the largest animal that I've heard to ever live is the megalodon. http://www.karencarr.com/auto_image/auto_image_mid/VMNH_megalodon.jpg picture of what whales are to the megalodon
My butt is the largest
animal kingdom
Giganotosaurus
The largest animal ever captured and held in captivity is the Killer Whale (Orcinus Orca).
The blue whale is the largest sea animal, and also the largest animal that ever existed.
no infact the worlds largest animal is the blue whale
the largest animal existing on this planet is the blue whale and is possibly the largest animal ever to have existed on the planet.
The largest prehistoric animal ever was the Basilosaurus which was a 59 foot whale. The largest crocodilian was the 39 foot long Sarcosuchus Imperator.
The largest animal ever is the Blue Whale which measures approximately 30 metres in length
If you've ever seen one (I have) then there is no doubt it's the largest animal on earth.
Dinosaur
The largest animal ever is the blue whale ...although it didn't quite walk on earth. http://en.wikipedia.org/wiki/Largest_organisms
The Blue Whale is the largest cetacean, and is also the largest animal ever to have lived on earth.
The Blue Whale is the largest animal to ever exist.
The largest animal that has been to space is a human, with the common chimpanzee coming in a close second.