With my cock stiff, I looked at the women nervously, seeing a hungry look on both of their faces. As I expected, the dog made the first move, getting down on her knees and slowly taking my manhood into her mouth, her tongue teasing each bit as it entered, eventually reaching the base. She then began to fondle my balls as she started to circle her tongue around the tip, causing me to moan lightly. As she did this, I glanced back at the rabbit who was biting her lip, clearly trying to fight her heat as she watched us. The dog stopped suddenly, causing me to look back at her just in time for her to throw her jacket in my face. I shook the jacket off my face only to see her place her boobs around my cock and begin sliding them up and down, licking the back of my cock each time she went up. 
I was at my limit, my balls swelling from the buildup but I wasn't able to release it due to the ring around my member. The dog could tell from my expression that I was being tortured by the fact that I couldn't cum. "Heh... Looks like someone needs to blow their load. Alright... I'll take the ring off." She said, opening her mouth as she slid the ring off, making sure to bend my cock at her face in the process. The moment the ring left, my manhood began to fire like a gun, both covering the dog's face and filling her mouth. It seemed like I had been cumming for hours before it stopped. "Mmm... Tasty... I wonder if all fox cum is this good..." She said, licking her lips before swallowing. 
I looked from the dog to the rabbit, my cock completely limp as I panted from exhaustion. "Hmm... I'm not so sure that the ring will even help with this. Hey! Bonnie! Come'ere!" Shouted the dog, beckoning for the rabbit. The rabbit approached, obviously a little curious as to what the dog wanted. "You still got those special pills on you?" The dog asked. The rabbit looked at me, blushing for some reason.
"Yeah... And I know you want to give him one, don't you?" She asked, already reaching into the pocket of her one-piece.
"You know it! Now hurry up and give me the pill. Or better yet, just go ahead and make him take it." Said the dog. The rabbit sighed at this.
"Oh, alright..." She said, pulling out a strange looking pill that she shoved in my mouth before I could get a good look at it. Moments later my cock was not only stiff as a board, but it also revealed my second dick and made them twice as large.
"Mmm... Looks like foxy-boy was especially well-endowed." Said the dog, surprised to see that I had two cocks. "Now, to put those things to good use..."