All Species Wiki
Boss Monster
Toriel Undertale.png
General Information
Universe Undertale
Classification Capracanis dominus
Homeworld Earth
Environment Any terrestrial habitat
Intelligence Sapient
Biochemistry Magic-based
Biological Information
Locomotion Bipedal
Lineage Information
Cultural Information
Capital City The Underground
Sociocultral characteristics
Members Toriel, Asriel Dreemur, Asgore Dreemur
Scientific Taxonomy
Planet Earth
Domain Eukaryota
Kingdom Animalia
Phylum Chordata
Subphylum Vertebrata
Class Mammalia
Order Carnivora
Suborder Caniformia
Family Capracanidae
Genus Capracanis
Species C. dominus
Other Information
Status Possibly endangered

Boss monsters (Capracanis dominus) are a species of mammalian monster from the Undertale universe.


While they superficially resemble goats, they're closer to dogs than anything else. They are bipedal creatures with a dog-like appearance, goat-like horns and white fur. Like many monsters, their bodies are made up of as much magic as the human body is water. Adult boss monsters can only age if their child does, meaning they have to have a child in order to age past adulthood.