Armor Class 13
Hit Points 51 (6d10 + 18)
Speed 60 ft.
Skills Perception +5
Senses passive Perception 15
Languages —
Challenge 2
Bite. m +6, reach 5 ft. Hit: 15 (2d10 + 4) Piercing damage.
Claws. m +6, reach 5 ft. Hit: 8 (1d8 + 4) Slashing damage. If the target is a Large or smaller creature and the allosaurus moved 30+ feet straight toward it immediately before the hit, the target has the Prone condition, and the allosaurus can make one Bite attack against it.
Monster Manual (2024), p. 348