Great movie. Loved the camera angle and the lighting was great enough so you could clearly see the dog mounting the guy from behind. You can't really see the dogs cock but you just know that he went in by those wonderful sounds and his eagerness to fuck his owner. Personally I've done this several times my dog and can tell you the feeling is amazing becoming one with the dog, it makes me cum easily!! Would have been great to see more of the guy's cock and to see the dog have a knot but still it's an amazing clip.
In this short but enthusiastic mating, the dog almost frantically pumps his master's asshole with a joy he's experienced before. The submissive master clearly loves every stabbing thrust, as he humps his ass up for his lover's easier entry. The dog dismounts and then pleasures his master further by gratefully licking the asshole he has just filled with dog-sperm. You can almost feel the long tongue gently penetrating and tickling the leaking channel, now hyper-sensitized by the pounding it has just taken. Another few seconds and the master's own turgid pole would have exploded in ecstasy, spilling its seed on the floor below. Wow!