Gigantism and acromegaly are two disorders with the same disease mechanism and somewhat similar presentations. Even though they have the same disease mechanism, the two have entirely different outcome simply due to the age of onset. Gigantism is the result if the disease mechanism starts in childhood.
Adult Velociraptors grew up to 6.8 feet (2 meters) long, 1.6 feet (0.5 meter) tall at the hip and weighed up to 33 pounds (15 kilograms).
Individuals range in size from 33 to 43 feet long (10.2 to 12.7 meters) 10 to 13 feet tall (3 to 4 meters) 3 to 8.5 tonnes. Mapusaurus (Earth Lizard) was a giant carnosaurian dinosaur from the Middle-Late Cretaceous of what is now Argentina. Once thought to be a relatively small 10.2 meter long carcharodontosaurid(the estimates were based off the subadult holotype specimen), accurate estimates of the largest individual show the sizes of 43 feet (12.7 meters).