Teeth of this dinosaur were first discovered in 1874. The first skeleton was first found by Barnum Brown in 1900 and was first given its name in 1905. This super predator fed upon anything it could kill, including it's own kind. With a bite force exceeding any animal known, and a powerfully built body, this is truly the King of the Dinosaurs.
Ummm... Yutyrannus. It was an earlier relative that was completely feathered and was the same size of an Allosaurus. As for the baby part, no modern animal has that trait, so we don't know it that's something to truly consider.