<p><a rel="nofollow" href="https://tibia.fandom.com/wiki/Chief_Grarkharok">Chief Grarkharok</a> can be fed these items :) He only likes fresh ones though. Whether or not it actually does something for the <a rel="nofollow" href="https://tibia.fandom.com/wiki/Troll_Sabotage_Quest">Troll Sabotage quest</a> is not confirmed, so it appears to be just roleplay for now. In Mythology, Trolls are known to eat weird things so things this could be why. I don't think any NPC buys dead snakes or frogs...</p><p></p>frogs, I checked multiple fansites and they don't list this information.</p><p></p>