The morning light backlit my Corgi, Lexi, as she enjoyed the sunny warmth on the back deck, and the house acted as a very large reflector. No fill flash was needed. The catchlights clearly reflect the windows of the house and may or may not be appealing.
I simplified the background with a layer mask in the second shot.
Warning the last time we had someone's dog over (well we did watch Pumpkin for 10 days while they were on vacation) Tara ran poor Pumpkin to exhaustion. When our friends returned and picked her up they said Pumpkin ran into their family room curled up in her favorite spot on the old couch and except to eat and potty slept for almost 3 days.