Retriever is a type of gun dog, not a single breed. The label covers dogs developed to find shot birds and bring them back gently, and on adoption pages it most often means a Labrador or Golden Retriever mix, or a dog with that look and unknown ancestry. Chesapeake Bay, Flat-Coated, Curly-Coated and Nova Scotia Duck Tolling Retrievers belong to the same family.
Most retriever-type dogs are medium to large, sturdy and food-motivated, with a water-resistant coat that sheds a good deal. Many are sociable and happiest with something in their mouths. In New Castle, that energy has an outlet along the riverfront, but a long, bouncy adolescence is common, so training and daily exercise matter. Because ancestry varies, a dog's age and personality tell you more than the label.