Panicking, you nearly miss to realize that your new doggy cock is growing out of it's sheath slowly. It's pointed, slick and bigger then you'd imagined it could ever be.
Awed by your member's size, you just have to take a lick of it with your long, rapsy tounge. Your cock tastes a bit salzy, but very nice and soon your licking produces a tiny drip of pre-cum on the tip of it.
Bending down much further then you were able to as a human you move your muzzle nearer to your growing shaft, inhaling it's scents and getting aroused more by the second. Then you start sucking your own cock.
Whining you experience lust in a way you never thought possible as your own tounge and muzzle masturbate your cock to the highest levels of arousal.
All too soon your member starts oozing long sticky shots of doggy sperm into your mouth, which you swallaw all too eagerly.