Weimaraners are fast and powerful dogs, but are suitable home animals given appropriate training and exercise. These dogs are not as sociable towards strangers as other hunting dogs such as Labradors and Golden Retrievers. Weimaraners are very protective of their family and can be very territorial. They can be aloof to strangers, and must be thoroughly socialized when young to prevent aggression. They are also highly intelligent, sensitive and problem-solving animals, which earned them an epithet "dog with a human brain". They are ranked 21st in Stanley Coren's The Intelligence of Dogs, being of excellent working/obedience intelligence.