While Albertosaurus was large for a theropod, it was much smaller than its larger and more famous relative Tyrannosaurus rex, growing nine to ten meters long and possibly weighing less than 2 metric tons.
Mentres que o Albertosaurus era grande para ser un terápodo, era moito máis pequeno que o famoso Tyrannosaurus rex, medindo entre nove e dez metros de longo e pesando algo menos de 2 toneladas.