DOG FAQ - Do Mastiffs Bark much?

Puppies are puppies in most breeds. Young Mastiffs tend to bark more than adults because of the excitement of play. Adult Mastiffs rarely bark except when you first arrive home, or they hear a sound they want you to investigate, like a doorbell. Most Mastiffs will howl if they hear a siren close by, since it sounds like a howl such as wild dogs would respond to.

Mastiff - Dog Lover