**I always said to myself that I would never make a "fucking the family dog" video... but a couple of years down the line, and finally, here we are!** You bring your big dog to your sisters room, because you want her to meet him. You didn't want a pathetic puppy, you wanted a really big, butch dog to walk the streets with. Your sister is less than impressed with your dogs manners, and tries to shoo him away when he starts to hump her leg. His dick is massive for your sister, and you start to tease her for turning the dog on. Your sister starts to find the funny side of things, and agrees that she should find out if the dog would lick her pussy if she spread it for him, which he does. She then encourages the dog to jump up so she can see if he will actually stick it in her... You can't believe it when your dog starts to drill into your sweet sister, and you are even more shocked at the fact she is moaning and enjoying it! What the fuck?! She rides him and bends over for him and then starts to suck him off because she is desperate to see what doggy cum tastes like. He cums twice in your sisters mouth and she can't get enough!