sid begins sniffing your pubic area and acting excited. Suddenly he jumps up and tears your yoga pants off with his teath. You gasp and stumble backwards weraring only your shirt and panties. You turn over and start to get up when sid jumps on top of you. His weight prevents you from getting up. You smell somthing oddly enticing, turning to the left you see Sid's canine erection hanging below his belly. You feel his paws shift downwards and somthing poke at the back of you panties. Oh god you think to yourself as he goes through the leg hole and you feel its wetness probing for an opening. You gasp in pain and spring to your hands and knees when his overly large cock pushes into your vagina. His knot expands making you reel in pain. Painting, sid rocks back and forth rubbing the inside of you. Suddenly feeling flush you realize that youve been going along with sids rutting motion and painting heavily. Patches of coarse brown and grey fur begin to spread out from your pubic region. You feel you vagina expand and move up to bettter be mounted by a large animal. Your now hairy chest sprouts 4 more breasts the same size as your normal ones and they swuish and bounc against eachother as you rutt. Your mouth and nose elongate into a sort of half muzzle and your ears become canine like. A tail pushes throw your now soaking panties and begins to wag furiosly against sid and you both howl in pleasure as he releases his seed.