WASHINGTON – You know that dog biscuit shaped like a bone but made mostly of wheat? The fact that your dog is satisfied with it instead of going for a piece of your thigh may be one of the big reasons why its ancestors evolved from wolves to house pets.
A team of Swedish researchers has compared the genomes of wolves and dogs and found that a big difference between the two is a canine’s ability to easily digest starch. On its way from pack-hunting carnivore to fireside companion, dogs learned to love — or at least live on — wheat, rice, barley, corn and potatoes.
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