The raptors within the franchise are more built like ostriches. Their muscle are dense rich in myoglobin, allowing them to sustain maximum efforts for prolonged periods of time. Their tendon are 5x more elastic has a humans allowing them to jump high. There fast twitch muscle fibers are also enhanced. They can possibly break down energy and use it more efficiently to gain more speed. To also build more on the ostrich part. They can have that same tendon that transfers and build the energy for each stride. Follow me on ig: killer_b.sg