Velonasaurs can be tamed by trapping or immobilizing them, then knocking them out with tranquilizers while avoiding their spine projectiles before feeding them and maintaining torpor. They serve as versatile living turrets, using rapid needle fire and spinning attacks to defend bases or mounted platforms, though turret mode drains stamina quickly and their bodies are fragile. When encountering one, keep your distance, use cover and ranged weapons, avoid fleeing in a straight line, and watch for nearby Velonasaurs.