No. "Portuguese water dog" is a noun phrase.
"Portuguese" is an adjective; "water" is a noun; they both are modifying "dog".
His dog is a Portugese Water Dog.
The proper adjective for Portuguese is "Portuguese."
A Portuguese Water Dog
Portuguese water dog
no
They got a Portuguese water dog and named it Bo. They they got a second one and called it Sunny.
The Portugese Water Dog is a very active breed of dog.
The president's dog? He's a Portuguese Water Dog.
Portugal
The Obama's own a Portuguese Water Dog.
The word is spelled Portuguese. A good example sentence using this word is, "The First Family has a Portuguese Water Dog named Bo." Another example sentence is, "The Portuguese language is a Romance language."
The Portuguese Water Dogs should be groomed about once a month.