Chesapeakes are affectionate and bright with their own people but are often reserved with strangers, and many are more protective than is typical of retrievers. They are sensitive and also strong-willed, and they respond poorly to harsh handling. The breed keeps a strong working drive and a marked love of water.
It is a powerfully built dog with a broad skull and a deep chest, and its hindquarters stand as high as the shoulders or slightly higher. The eyes are a clear yellowish or amber. The coat sets the breed apart from other retrievers: a short, harsh, wavy outer layer lies over a dense, woolly undercoat, and its natural oil sheds water quickly. Colours run through shades of brown, sedge and deadgrass, a dull straw tone that blends into marsh grasses.
The Chesapeake Bay Retriever was developed by Maryland wildfowlers and market hunters. They needed a dog that could retrieve ducks from rough, icy water for long days in the field. Over the nineteenth century, local strains around the bay were blended into a recognisable type. The American Kennel Club recognised the breed in the late nineteenth century, and Maryland later made it the official state dog.