When you think about dog food, you probably picture more meat than potato. But a new study finds that, unlike wolves, dogs have genes that allow them to digest starch. That evolutionary adaptation may have helped fuel their domestication. The report is in the journal Nature. [Eric Axelsson et al, The genomic signature of dog domestication reveals adaptation to a starch-rich diet]
Dogs and wolves hail from a common canine ancestor. And though you can still see a strong resemblance, many traits distinguish the two today. Wolves have larger teeth and skulls than dogs do. And they’re far less likely to bring you your newspaper and slippers.
Read more at Scientific American.