Is a Portuguese water dog smart?

Their country of origin is Portugal and they were a valued fisherman's dog because they were capable of retrieving things from the sea and carrying messages between boats. (this info from:...

Portuguese Water Dog (Portuguese Water Dogs once existed all along Portugal's coast, where it, taught to herd fish into the nets, to retrieve lost tackle or broken nets, and to act as a courier from...

Of course, there no reason it shouldn't be.

Portuguese Water Dogs produced by a knowledgeable breeder tend to cost between $1800-$2400. While this might appear to be pricey, good breeders have invested much time and study into producing dogs...

Portuguese water dogs do not shed cause I have one and she never shed and they are like poodles and bichon frise