Most sources list the Tweed water spaniel or Tweed water dog as a breed strongly resembling a small liver or yellow curly-coated retriever.
In the late nineteenth century, the flat-coated retriever expert Stanley O’Neil encountered some of the Tweeds helping salmon fishermen with their nets on the Northumberland coast:
Further up the coast, probably Alnmouth, I saw men netting for salmon. With them was a dog with a wavy or curly coat. It was a tawny colour but, wet and spumy, it was difficult to see the exact colour, or how much was due to bleach and salt. Whilst my elders discussed the fishing I asked these Northumberland salmon net men whether their dog was a Water-Dog or a Curly, airing my knowledge. They told me he was a Tweed Water Spaniel. This was a new one on me. I had a nasty suspicion my leg was being pulled. This dog looked like a brown Water Dog to me, certainly retrieverish, and not at all spanielly. I asked if he came from a trawler, and was told it came from Berwick.
The dogs were water spaniel/Newfoundland (“St. John’s water dog) crosses, which were essentially a regional variant of the curly-coated retriever.