He turned around and sees his penis is shrouded in a sheath.It is huge,the female's presence causes it to grow.He looks at Frisky with big brown eyes and she steps closer and licks him.He sees her tits as they become slightly more boob-like.She is quite sexy for a dog.
Then,she rolls over and he smells her sex.It is too much for him as, his canine urges grows more.He mounts on top of her and his penis goes into her.As they hump his penis knots,to keep it in.Then,after a few minutes semen flows through his new penis.
He then, sences someone coming.He unots and quickly gets up on all fours.He smells the air and sences that his brother is coming.He goes and hides under his bed while,Frisky takes interest in the newcomer.The door opens and Stan looks into a empty room and only sees Frisky.He bends down and pets her and she pants enjoying each stroke against her body.She rolls over to show her tits and belly.
She then,rolls over and gets up.Stan asks,"Do you want a walk ?"
She looks at him and pants but,when he reaches down to grab her collar,she bites.Her fangs sink into his hand and it is covered in saliva.Stan yells out,"What the aaaahhh!" He looks at his hand and sees that the saliva runs into the bite and fanishes.Stan says,"What the hell?"