A fast and deadly mount for anyone who can tame one. The best strategy is to try and lead one into a taming pen, and kill the others. If multiple come in, kill the ones you don’t want and knock the others out. You only need a male and female to start breeding a pack, so you don’t need to tame the whole cluster that spawns together.
The Allosaurus is a very useful creature, they can be used for meat harvesting, base guards, kibble, etc. Allos are also very useful for bosses, I would recommend mixing some of these (preferably mate boosted) with rexes for the bosses.