Flat-Coated Retrievers are medium to large-sized dogs. Males typically weigh between 60 to 80 pounds (27 to 36 kg) and stand about 23 to 24.5 inches (58 to 62 cm) tall at the shoulder. Females usually weigh between 50 to 70 pounds (23 to 32 kg) and stand around 22 to 23.5 inches (56 to 60 cm) tall.

Flat-Coated Retrievers are renowned for their friendly, outgoing, and optimistic temperament. They are typically great with children, families, and other pets, making them excellent companions. Their intelligence and eagerness to please facilitate easy training, although they can have a playful and sometimes goofy side that reflects their youthful nature.

The breed is known for its long, flat, and lustrous coat, which can be solid black or liver-colored. The coat is water-resistant, which is beneficial for retrieving in wet environments. Regular grooming helps prevent mats and tangles, especially during shedding seasons.

Flat-Coated Retrievers thrive in active environments and require ample exercise to keep them happy and healthy. They do best in households where they can be included in family activities and given regular engagement. While they can adapt to various living situations, they prefer homes with ample space and opportunities to run and play.

These dogs excel in various activities that utilize their retrieving instincts, such as hunting, tracking, and agility. They also enjoy obedience training, swimming, and games like fetch or Frisbee. Regular walks, play sessions, and mental stimulation exercises, such as puzzle toys and scent work, are important to keep them physically and mentally satisfied.