Pooping on the Driveway
What would make a 7 yr. old male Sheltie suddenly decide to start doing his business on the driveway rather than in the yard? He just started this about 2 weeks ago, but it has become a regular occurrence. We live on 2.5 acres so he has plenty of yard available. We also have a 6 yr. old female Sheltie, but she has not taken up this habit.