Known as the royal dog of Madagascar ... and when an iron-containing porphyrin sits on white fur, it stains it brown or red. Porphyrins are also found in dogs’ saliva and urine, leading to ...

On the platform close to the guests of honor stood a large white dog, wagging its tail. From one side of its neck protruded the head of a small brown puppy. As the surgeons watched, the puppy’s ...

A grey and white dog had been hit by a car when it was found on the side of Interstate 95 at Exit 10 in Miami-Dade County. By its side was a brown dog, using its body to protect its injured brother.