I let my 2 Shelties out on Sunday morning at 6am. We have a 6 ft. privacy fence and never had concerns in the past. This morning a coyote must have jumped or scaled the fence and attacked our 14 year old Sheltie. After the coyote dragged him to the rear of the yard, our 2 year old Sheltie kept harrasing the coyote and the older Sheltie got away. He was really battered and chewed but 6 days later, doing well.