gelbooruhttps://xbooru.com/index.php?page=atom&tags=2019 2d 2d (artwork) amalgamate (undertale) animated skeleton canid canine commission art dark background digital media (artwork) dog duo endogeny feral fluids gradient background larger feral licking melle-d mellednsfw monster onomatopoeia sans sans (undertale) size difference skeleton undead undertale undertale (series) video game character video games2024-06-16T09:02:40Zgelbooru