Burnout
From Malowned. Burnout always has a supply of well toasted marshmallows. Undead type. A reward from a Stratholme pet challenge - (). A correct breed is P/S (ignore B/B stats on this page).
Burnout is a Battle for Azeroth pet rewarded from the Malowned achievement, earned by defeating Postmaster Malown in the Stratholme pet dungeon.
Guide awaiting review
Enter Stratholme Pet Dungeon
Enter the Stratholme pet dungeon and locate the hidden letter somewhere within the instance.
Deliver Letter to Mailbox
Deliver the hidden letter to the mailbox located next to the slaughterhouse entrance inside Stratholme.
Defeat Postmaster Malown
Defeat Postmaster Malown to earn the Malowned achievement and receive Burnout as a reward. A team featuring Chitterspine Skitterling works well for this fight. If your pets need healing mid-run, you can log out to restore their health or start the battle with a healing pet, use its heal, then leave and re-enter the battle.
Tips
Burnout has a random chance to spawn with arrows in its body when summoned.
The correct breed for Burnout is P/S, giving it 304 power, 297 speed, and 1290 HP at level 25.
Burnout's appearance can be copied using
Magic Pet Mirror combined with 
World Shrinker, producing roughly a human-sized model.
