The Dog Disc Mod is a very small mod that adds (allmost) only the Music Disc with the name "Dog" in the game that you craft with 1 "C418-Cat".
This small modification comes with a big amount of compatible Minecraft versions from the 1.12.2, up to (1.2026) 1.21.8.
New optional content (not in every version):
Command: /music_dog_jukebox
Advancement: So nostalgic