|Release date||23 October 2014 (Update)|
|Quest NPC?||2014 Hallowe'en event|
|Location||Grim Reaper's mansion|
| 2014: Only the Grim Reaper would have a pet like this.|
2014: Perhaps Death killed a giant skeletal hound thousands of times to get this pet.
In the 2014 Hallowe'en event, it was revealed that Growler ate the postman and made a complete mess of Death's house, which forced Death to hire the player to clean up the place before his new servant arrived, as he didn't wish to seem completely incapable of looking after himself.
During the event, he could be interacted with in a number of ways, including stroking him, trying to entertain him, and blowing a raspberry at him. If a raspberry was blown at him, he could kill a player instantly, although they would respawn in the mansion with all their items.