Brussels Griffons are small dogs. They typically weigh between 8 to 12 pounds and stand about 7 to 12 inches tall at the shoulder, with the size often depending on whether they are of the rough or smooth coat variety.

Brussels Griffons are known for their affectionate, curious, and lively personalities. They are intelligent and can be quite expressive, often forming strong bonds with their owners. While they can be friendly and sociable, they may also be somewhat wary of strangers. Training and socialization from an early age are important to ensure they grow into well-adjusted companions.

Brussels Griffons come in two coat types: rough and smooth. The rough coat is dense and semi-long, while the smooth coat is short and straight. Common colors include red, belge (a mix of black and reddish-brown), and black. Regular grooming is necessary for rough-coated Griffons to prevent matting and to maintain their appearance, while smooth-coated Griffons require less maintenance.

Brussels Griffons thrive in family environments, enjoying close companionship and interaction with their owners. They adapt well to apartment living, provided they receive regular exercise and mental stimulation. They do not like to be left alone for long periods, as they can become anxious or develop behavioral issues.

Brussels Griffons enjoy a variety of activities, including short walks, playtime, and interactive games. They can benefit from training sessions that stimulate their minds and provide opportunities to learn new tricks. They also enjoy socializing with other dogs and participating in dog sports such as agility and obedience, depending on their individual personality.