1.To run the Iditarod you need at least this many dogs .... 16 20 12
2.Dogs always wear these on their feet when racing .. socks booties shoes
3.Mushers sleep in these on the trail. .. sheets sleeping bag sled
4.Mushers use these to see at night .. headlamps binoculars glasses
5.Many mushers carry one of these in their sled .. stick helmut gun
6.Mushers must carry one of those at all times .. an extra coat first aid kit heat pad