The original Velociraptors come in four varieties: Tribe-A, Tribe-B, Tribe-C, and the final (also called the Alpha Raptor). It is possible that each tribe represents a Velociraptor subspecies, or a different genetic version of a single DNA source. This could explain why the tribes encountered earlier in the game are easier to defeat than the later tribes, which may have fewer genetic defects. According to Hammond, the animals grew vicious in captivity; not eating, pacing their cages, growing quick-tempered... they had no choice but to release them into the wild.. "In the jungle, the forest and the mountain, three raptor tribes staked out territory. Albertosaurs and the seven T. rex chose their dominions. Jurassic Park.. The famous big one that was kept in Jurassic Park was from this tribe. The idea of separate raptor tribes was one of the most unique things Trespasser had to .