A good idea, while you cannot upgrade their attack, you can get a pack and upgrade their health and speed. They become useful as attack dogs this way. Another usage is to transport wood early game. Hope this helps!
These little guys are very useful because of their charge light which keeps nameless away from you and gives you higher damage when battling the reapers. Beware the seekers who want the light. Tamed with plant species z seed or aquatic mushrooms. When tamed eats berries and meat