I have 2 ... almost 8 month old labs. They get along pretty damn well at this point for being siblings. My only complaint is one of them is loud during play after 10-15 mins. At first I thought it was potentially aggression and used to stop play after I heard the growling but after letting it play out, it usually lasts 10-15 seconds before they take a break themselves. It's not really an issue in the yard but in the apt when they get going with a toy eventually 1 barks to end the tension. I've tried sitting in on the play sesh and waiting till she is about to bark and stopping her but it hasn't curbed the ramp up to it. Any way to teach her to play without being vocal or is this just something that will prolly last thru adolescence? I think it's basically her getting over threshold but they seem to know to chill out right after. How to stop the barking crescendo?
