The Portuguese Water Dog earned its keep on fishing boats centuries before it became a presidential pet. It herded fish, retrieved gear, and carried messages between ships — and it was paid a wage for the work. That history matters, because this breed still shows up ready to do a job. Smart, loyal, and deeply attached to its people, the PWD is a remarkable companion. But there's more to this curly coat than meets the eye. Read on before you fall in love.