Griffons tend to get along well with other animals in the house, including cats, ferrets, and other dogs. However, they can get into trouble because they have no concept of their own relative size and may attempt to dominate dogs much larger than themselves.
Some say: "Having a Griffon means having a true constant companion. They need their favorite person all the time, and will be very unhappy if left outdoors or alone most of the day. A Griffon Bruxellois will want to follow you about the house, on your errands, and to bed."
The Griffon is an intelligent cheerful dog with a terrier-like disposition. With lots of personality, they make a fine companion dog. It is affectionate, willful and high-strung, but charming. Lively and curious, they love everyone, but can get quite moody. Unusually sensitive and quite demanding, this breed loves to be spoiled. It must be raised in the house with the family. These dogs may be gluttonous or picky eaters and may be difficult to housebreak. They make good watchdogs and can be taught to perform tricks. Griffons like to bark. They do best with older considerate children. They have an almost human facial expression which has earned them the nickname "monkey face".