This page offers a guide on how to accept and complete Request 3: What Did Shinx’s Ears Look Like? in Pokémon Legends: ARCEUS.
One of the first requests you can pick up is from Toshi, who is near the buildings between Galaxy Hall an the gate to Obsidian Fieldplains. Speak to him and he’ll ask to see a Shinx so he can see what their ears look like.
Where to Find a Shinx in ARCEUS
Since you’ve already completed The Galaxy Team’s Entry Trial, in which you were tasked with catching a Bidoof, Starly and Shinx, you’ll already have a Shinx in your arsenal. If you’ve lost your Shinx by releasing it (deliberately or accidentally), don’t worry too much as you’ll be able to catch another at Aspiration Hill in Obsidian Fieldplains - just remember they’re aggressive and can’t be caught without engaging in battle first.
Request 3 Reward
After a brief cutscene in which Toshi examines Shinx, you’ll finish the request and earn x3 Potions.