Join Date: Dec 2012
Submit Photo: 5
Photo Nominations 1 Time in 1 Post
Has this happened more than once or is it happening all the time? If it's one time, he could have been tired for other reasons.
Or, he could be very heat sensitive and need to build up his endurance in that degree temperature. Dogs, like people, have different temps they're okay with. At 71-ish degrees most dogs would be fine, but for him, it may be that around 70 is the temp where he starts needing water breaks on a walk.