In Part 12 of Minecraft Survival, Naka meets and befriends a wolf that he promptly names "Doggy" roughly a quarter to halfway through filling out his recently created map. Said dog follows him around, and he takes measures to protect him during the nighttime, such as building up a dirt barrier with torches around the area he wants to rest in. But just as he's heading back home after finally completing the map, Doggy, who is banged up after taking several falls and a Creeper explosion from out of nowhere, is accidentally killed with an errant swing of Naka's sword as he is battling a zombie just steps away from finally reaching the front door. Part 12 ends on a sad note with Naka saying, "Doggy...I'm sorry..."
The beginning of Part 13 has Naka having made a grave for his short-lived four-legged friend, with a sign and a piece of cobblestone to mark it, complete with a rose.
Naka having to leave Spu, his faithful Moa mount, behind at the end of episode 28 and the Aether mod segment of Journey Home.