Contact: Leila Gray
University of Washington
Caption: Oliver, a 50-pound Border Collie, has the alertness, size, shiny coat, muscular strength and herding instinct characteristic of his breed. Above, he waits for his tub to be filled with water. Border Collies were one of the 10 breeds studied to learn about the effects of selective breeding on the dog genome.
Credit: Eric Tognetti
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