Typical examples of the breed measure between 22–24 inches (56–61 cm) at the withers, with the average weight between 20–25 kilograms (44–55 lb). The breed is similar in size to the English Setter, although is slightly smaller. Of the Spaniel type breeds, only the Large Münsterländer and Drentse Patrijshond are recognised as possibly growing to larger sizes, with the Drentse measuring 21.5–25.5 in (55–65 cm), and the Münsterländer slightly smaller with a narrower range at 23–25 in (58–64 cm).

The Picardy Spaniel is a docile breed of dog and is fond of playing with children and bonds well with their master. It is described as having a gentle sociable nature, possessing a good character and being relatively easy to train. In France, the breed is used for hunting in wooded areas for Pheasants, and in swamps for Snipes. However it can also be used for hunting ducks, hares and rabbits. The breed excels at hunting in marshes and will not hesitate to jump into water. It can also adequately serve as a retriever should it be required. The dog is content with a small amount of space and could suit life in the city, but also loves open spaces.