Mastiff
Medium Beast · · CR 1/8
- Beast
- Medium
- Tier 1
As a medium beast (unaligned), Mastiff carries CR 1/8. Common in forest, hill, and urban environments. Sourced from Monster Manual (5e 2014) and Monster Manual (5.5e 2024).
Stat Block
- Challenge Rating
- 1/8
- Type
- Beast
- Size
- Medium
- Alignment
- —
- Speed
- —
- Habitats
- Forest, Hill, Urban
- Sources
- Monster Manual (5e 2014), Monster Manual (5.5e 2024)
Ecology
Mastiffs are domesticated breeds developed over centuries from wolf-related ancestors, bred for size, courage, and loyalty. They serve as guard dogs, war dogs, hunting hounds, and noble companions across most settled lands. They thrive in human and demihuman society and rarely return to wild populations; a stray mastiff usually finds a new household within days. Working bloodlines specialize for guarding estates, hunting dangerous game, or accompanying soldiers on campaign, and breeders preserve these lines carefully.
Behaviour
Mastiffs are calm, alert, and devoted to their handlers. They tolerate strangers when introduced properly and become fierce defenders when threatened. They communicate through low growls, sharp barks, and body language refined by millennia of partnership with humanoids. Trained mastiffs respond to whistle commands and can work in pairs or packs under a single handler. Off-duty they are surprisingly affectionate, especially with children of the household.
Origin
Mastiff lineages trace back to early war dogs bred by ancient empires for siege and patrol work. Many noble houses maintain old bloodlines as status symbols and practical assets, with breeding records older than some kingdoms. Some ranger orders claim their hounds descend from a celestial dog gifted to mortals long ago. Whether mythical or mundane, the mastiff's role as faithful guardian is woven so deeply into civilization that they appear on coats of arms, gravestones, and household shrines alike.
Related Monsters
Frequently Asked Questions about Mastiff
- What is the challenge rating of Mastiff?
- On the bestiary CR scale, Mastiff sits at 1/8. It fits parties just starting out.
- What type of creature is Mastiff?
- The bestiary type for Mastiff is beast, medium size.
- Where does Mastiff live?
- Mastiff's listed habitats include Forest, Hill, Urban.