"beautiful dog" is correct and usable in written English.
You can use it to describe an attractive and well-groomed dog. For example, "I saw a beautiful dog today at the park - it had a shiny black coat and bright eyes."
NEW ADDITION A springer spaniel, beautiful dog.
"Beautiful dog," the cashier remarked to me.
"The big challenge was that beautiful dog," he said.
"Willie was the most beautiful dog in the world," Dr. Young said.
I don't want a beautiful dog if it cannot move correctly.
Instead, the man said, in a tone of slight reproof, that the dog was an English mastiff — "Beautiful dog".
If they actually want to win in the fall, they have to give the vast majority of American voters who don't participate in Republican primaries a reason to vote for Mr. Romney that is more substantial than badly sung lyrics from "America the Beautiful," dog-whistle lines about President Obama's patriotism, and a relentless attack on women's rights.
"We had to find beautiful dogs that could do tricks," she said, sighing.
"And the first company I used, they did 'Indiana Jones' and all the great movies with animals, and they had beautiful dogs, geniuses dogs — but not a Jack Russell.
In East Hampton village on Main Street, day-trippers wearing late-model Merrill moccasins, leading beautiful dogs on leashes and with cameras swinging at their chests shopped the windows at Ralph Lauren and Gucci, Dylan's Candy Bar and Tiffany.
"I know I remember the dogs... the beautiful dogs, with their adult faces seeming to have come to terms with the burden of heat around their unsheddable coats; watching the slim people who had somehow provided room in their lives for dogs... ...... "Everything was close together".
