Boost is an ability of the raptor to gain a short boost of speed for a few seconds by pressing the shift key while on the ground. It may be activated about once every 20 seconds.
Other abilities are added to the boost when you have 250 (Jump) and 500 (Strength) spare DNA.
The boost has effects identical to the ability powerups you can eat while running.
When riding a parasaurolophus, the player can't use the speed boost, as the dino does not count as being on the ground!