Retriever is a type of gun dog rather than a single breed. It covers dogs developed to find shot birds and carry them back gently, and on adoption listings 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. Many are sociable and happiest carrying something in their mouths. In Plano, that usually means a dog who enjoys the trail network, a fenced yard and company, and who needs daily exercise and training through a long, bouncy adolescence. Ancestry varies, so meeting a dog tells you more than the label.