پاهای کلنگ سگ های سورتمه باستانی به مردم کمک کرد تا در 9000 سال گذشته قطب شمال را طی کنند.

The stubby legs of ancient sled dogs helped people traverse the Arctic for the past 9,000 years

For centuries, dogs have helped people travel across the Arctic, hauling supplies, equipment and other goods through snowy landscapes where other domesticated animals struggled to venture. Now, a new study publishing Oct. 14 in the journal iScience finds that sled dogs might have evolved shorter legs that helped them pull loads more efficiently.