As soon as you see a rutting dog behind you, an instinctual desire arises within to mount him. But getting him onto you requires skill and patience as some may start flailing around trying to release themselves from their grip on you as many will try breaking free before finally succumbing.
As you lean down to get him on you, make sure his back legs are held just below their knee joints to achieve optimal results. This prevents him from ripping out your rectum, while giving you enough control to fuck hard without him pushing his knot through your anal. Eventually his knot will recede and come slopping out through your looser asshole in a wet, slimy mess of wetness that drips cum oozing bliss.
Dog cocks come in all forms and sizes. Their glans is usually flat wedge-shaped, and there’s usually a point with a nipple for opening the urethra. Their shaft tapers to an anal opening at one end before thickening again towards its midpoint at which point it’s known as the prepuce for unloading pre-cums and cums from their dog’s system.
To engage with a dog’s knot, you have two options. Either you keep your legs together or spread them open; when the latter option is chosen it allows the dog to more effectively use its knot to drive itself into your hole using it like a battering ram. Before engaging in such activity however, prepare yourself because a rapidly plunging dog knot in your anus could be painful and messy, therefore needing a comfortable spot on the floor, lube, camera/lights combo setup along with towels (ideally both options will work).