I used the 35-100 f2(which = 70-200 in 35mm) for the indoor shots. Love that lens. I was using my 50-200 wide open on the outdoor shots.
All these dogs were on a show lead, so, they weren't actually staying with the owner away. Show leads are easy to zip out in PS.
Conformation dogs are taught NOT to sit. Though both of mine do sit. Cinnamon got her CGC last week!