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Has she a pet dog?
or
Does she have a pet dog?
does she has a pet dog? is incorrect, it should be does she have a pet dog? And has she a pet dog? is correct also.
go to the park and if you see a dog has a sonw sutie and play with it and youll get the snow sutie.
A pet dog, it's the dog from the Simpsons.
Rihanna's favorite pet is her dog.