As dusk fell on the edge of Nouakchott, Kayo the husky left a trail of paw prints in the warm Sahara sand, an incongruous yet increasingly familiar sight in Mauritania.
Traditionally bred as sled dogs in the far north of Siberia, huskies have become a popular pet in the northwest African state -- where temperatures regularly soar to 40 degrees Celsius (104 degrees Fahrenheit).
