Anthony you should be really happy with Kira here !!!!
just plain old play behaviour - both consenting -- reading each other , accommodating
look more at the lab though -- so that you can read the other dogs in Kira's vicinity . Do you know this dog at all?
from the moment the lab is on the screen he/she is showing signs of being arroused, tufted - lofting of hackle hair over shoulders and similar lofting of patch over his croup - plus tail up -- this dog was excited and a bit unsure and that could lead to this dog coming back with some unthinking reflexive defense .
but Kira -- bravo .
I didn't want to get off topic, but here's what happened:
I was alone with Kira at our usual location. About 100 feet to the left, comes this lab, loose off leash. My first reaction was "oh shoot", here we go again. However, since Kira was in "training mode", and we were working on her heel, I kept her at heel, and got in front of her.
The lab stopped in front of me, and her hacks and tail were up. Nothing happened. Both dogs just stood there. Kira didn't react (yay!), and the other dog listened to its owner and stayed.
A few moments later, they went into a play bow, and seemed friendly. we both decided to let them play.
I was hoping you and others would get a good read on Kira's signals. She's been a work in progress for me, and I was looking forward to the input.