The Kennel Club describes the Lagotto Romagnolo as a squarely built, small to medium-sized dog of rustic appearance. The breed’s average weight is 24 to 35 pounds and height is 41 to 48 centimetres with males noticeable bigger than females. It has a moderately broad head and slightly convex skull, having the widest point at the zymogatic arch when viewed from above. It also has a strong muzzle, fairly large and nearly round eyes, moderately big and triangular ears, a large nose with open nostrils, powerful and wide jaws, and tight lips that are covered with long whiskers.
The Lagotto has a woolly and waterproof double coat, which is slightly rough on the surface that forms very thick ring-shaped curls. It has less tight curls on the head while the curls are evenly distributed all over its body. It also has well-furnished eyebrows, whiskers and beard. The Lagotto starts with a very soft coat as a puppy and develops its curls very slowly as it matures (fully grown coat when dog is 2 to 3 years old). According to KC standards, the acceptable colours are solid off-white, white with brown or orange markings, solid brown in various shades, brown roan, and solid orange.
The coat of the Lagotto Romagnolo sheds minimally but in order to keep it tidy, it needs to be trimmed by a professional groomer regularly. This also keeps everything more manageable at home. Special attention needs to be given to its whiskers and beards that tend to be messy when it eats. Other grooming requirements are ear cleaning, nail trimming and tooth brushing.