Blue whales are still historically large animals: Some can grow to more than 100 feet. Perucetus colossus was “possibly the heaviest animal ever,” said study co-author Alberto Collareta, a ...

The blue whale has long been considered the largest animal to have ever existed, even dwarfing the biggest known dinosaurs. But now a new species threatens to steal the crown, and upends what we ...

The heaviest blue whale ever recorded was a victim of whaling, caught in Antarctic waters in 1947. She weighed a whopping 418,878 pounds, which is about the weight of 2,500 average adult humans.

Blue whales can be longer — with some growing to more than 100 feet (30 meters) in length. This means the newly discovered whale was "possibly the heaviest animal ever," Collareta said, but "it ...

The largest blue whale ever found stretched 33 meters (108 feet) and was caught by whalers in the early 1900s. Usually, however, they can range between 24 and 30 meters (78-98 feet) in length, ...

The blue whale may no longer be the largest animal ever. The 37-million-year-old fossil bones were so large, experts thought they were boulders.

Despite being the biggest whale, the blue whale does not have the biggest brain of any creature. According to the Smithsonian, the sperm whale has the largest brain to have ever existed on Earth .

An animal that existed 40 million years ago may beat out the blue whale for the heaviest animal to have ever lived. A partial skeleton of a massive whale - Perucetus colossus - has been found in Peru.

The minimum mass estimate for Perucetus was 85 tons, with an average estimate of 180 tons. The biggest-known blue whale weighed around 190 tons, though it was longer than Perucetus at 110 feet (33 ...

Then there’s the heart of the blue whale, the largest animal ever to have lived. These marine giants can be longer than two school buses, ...

The most massive animal to have ever lived is still swimming around today. The blue whale, Balaenoptera musculus , regularly tips the scales at over 100 tonnes. Some estimates have pegged ...