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).
Smilodon populator was the largest of saber-toothed tigers. 1  Weight: 220-400 kg. 2  Height at shoulders: to 1.2 m. 3  Length: to 2.6 m (without the tail) 4  Tail length: 30 cm. 5  Length of canines: 30 cm â they jutted from the upper jaw at 17 cm. 6  Occurrence: 1 m â 10,000 years ago.