heat cycles

I'm extremely curious to know what it feels like to penetrate a bitch's pussy. Let's see how detailed you can describe it. Thank you guys!?

So as the title states, my Newfie girl tends to have a heat cycle just shy of 5 months to a couple of days past 5 months. I've only had her for 1.5 years and this has been the case since I got her. It honestly could just be normal for her. I've consulted with many more older and more experienced...