What is the behavior of a Brittany Spaniel?

from wikipedia

Size

Brittanys should range in a height of 17 inches to 20.5 inches at the withers (17.5 to 20.5 in America), with females at the lower end and males taller. A properly constructed and healthy Brittany maintains a weight between 36 and 43 lb (16 to 19 kg), depending upon height. North American field lines tend to be larger, with many dogs reaching a healthy weight of 45 to 50 lb (20 to 23 kg).