The Portuguese Water Dog is a robust dog of medium build, slightly longer than it is tall. It is strong and well-muscled, able to work both in and out of the water for long periods. It has a profuse single coat, either wavy or curly. Two clips are acceptable: the lion clip, in which the muzzle and middle part, up to the tail tip, are clipped; and the retriever clip, in which the entire coat is scissored to about 1 inch in length, with the tail tip again left full length. The water dog’s expression is steady, penetrating and attentive, reflecting its spirited disposition.

The Portuguese Water Dog is one of exceptional intelligence and trainability, obeying any orders given by its master with willingness and pleasure. It is obedient both to those who care for it and to those for whom it works. It has a spirited disposition, is brave and independent, and resistant to fatigue. Its expression is hard and penetrating. The breed has splendid sight and a fair scenting capability.