During the event period which if from Mar 27, 2025 (Thu) after maintenance till Apr 10, 2025 (Thu) before maintenance, you can trade your Tier 3 or Tier 4 pets through Special Exchanges with Nerry in Velia for event rewards ( excludes Young Crimson Dragon acquired through Garmoth's Horn quests, Pit-A-Pat Mole, and Nouvermon  ).

You can get rewards depending on the tier of the pets given to Nerry.

Check this link for more details:https://www.tr.playblackdesert.com/en-US/News/Detail?groupContentNo=11657&countryType=en-US

That's it for this guide, feel free to contact me via discord if needed: abdelhamid.dustan

Take good care.