I woke up one morning and discovered I was a dog. After some experimenting found that I could shift from my human form to the form of a large black furred canine. I soon came up with a plan to take advantage of this new ability. I went down to town hall and got a license and then a large collar to attach it to. Then I went down to the local oound and watched for the perfect adopting person. I was extremely lucky when Alyssa and McKayla came in looking to adopt a dog. I had found an empty pen in the back so walked up to Alyssa and told her about an excellent dog out back it would make an excellent guard dog and was very friendly. She thanked me and went to find someone to take into the back to see him. I quickly went to the cage and shifted into my dog form and lay down in the cage.

Alyssa and McKayla came back to the cage with an employee trying to explain that there were no dogs back here. He came to stop upon seeing me and told her if she wanted me it would cost fifty dollars for the shots and license and an additional fifty dollars adoption fee. Alyssa asked if McKayla wanted me and when she said yes Alyssa paid the money and after getting shots and paperwork done they took me to their car and squeezing in they took me to their house. Alyssa called her husband and had him pick up food and bowls and a few other things for me. Tom her husband was surprised to see me when he got home but as she set up my area Alyssa explained that she wanted something to protect them when he went on his many business trips and a pet for McKayla. We soon settled down in a daily routine and I got to see a lot of the two women.

Three weeks after bringing me home my chance came when Tom announced he had to leave Friday for a week on a business trip. That Friday he packed up and left for the week leaving the three of us alone in the house. Things were quiet that night but my chance came Saturday night when Alyssa went to take a shower after McKayla went to bed. I had planned this out and went and laid down next to the shower/tub and waited for Alyssa to finish , when she did and stepped out of the shower I let her step on the tip of my tail and crying out I sprang to my feet and ran to her room jumping onto the bed and curling up at its head I whimpered as I licked my tail. Alyssa surprised jumped back almost falling but she saved herself and calling out the name they had called me , Bear she followed me to her room still wet and naked softly calling out Bear and entreating me to calm down and come to her.

She knelt down at the end of her bed she lay half on the bed trying to get me to come to her. I slowly complied inching down the bed to her. She gently petted me and reached out to check my tail but I deftly avoided her and got down moving behind her on the floor growling at her when tried to turn to follow me. She stopped moving and continued talking softly to me. I started licking her wet body all over , she moaned softly as my tongue hit the more sensitive of her body parts. When I licked up her slit and anus she quivered and tried to tell me to stop but as I continued she whimpered then jumped when I drove my tongue deeper into her vagina. I licked even more fiercely as she became wetter and wetter. I could tell she was getting close to climaxing when she did I licked up all of her juices then as she lay there defenseless as she tried to recover I mounted her easily finding the entrance to her vagina forcing my fourteen inch long and three inch around dog cock balls deep into her feeling my reach into her womb.

She began begging me to stop as I pumped into her as fast as I could go. As she became louder I heard McKayla wake up and head quickly for her mother’s room yelling for asking if she was alright. McKayla entered the room and stopped when she saw her mom being fucked by her pet dog Bear. She walked up next to us and looked underneath watching me piercing her mom’s cunt. Alyssa ordered her to go back to bed but McKayla asked if I was hurting her. Alyssa started to tell her no but was stopped when another powerful orgasm wracked her body. I smelled McKayla becoming aroused she watched us I also heard her hand slipping into her cunt finger fucking herself. I continued fucking Alyssa causing her to experience more orgasms until I felt her collapse under me losing consciousness. Then I turned to McKayla advancing on her expecting her to run at any moment but instead she stripped and assumed the perfect position for me to mount her.

I mounted her and entered her forcing my cock into her tight little cunt expanding her entrance as I inched my way deeper into her. I finally felt my balls touch her ass and I began moving in and out of her until i could move faster her screams of pain slowly changed to ones of pleasure. Which changed back when she had her first orgasm I switched entering her even tighter anal passage. I felt her asshole stretch around me as she whimpered about me being too big for her there. Her body slowly adapted to me and I fucked her until she passed out. I shifted to my human form and putting Alyssa on her bed I enjoyed her in my human body. Then gently picking McKayla up I carried her back to her bed and made love to her young body and then shifted back to my dog form I lay down protectively next to her going to sleep.

Alyssa tried to get rid of me but McKayla cried so much that she finally gave up but made sure I slept outside at night. Tom came home the next week and everything was fine until it was discovered that both Alyssa and McKayla were pregnant and after having the two girl babies Tom left them getting a divorce easily when the children were proved not to be his. The two women raised the girls on their own and I was slowly allowed back into their lives especially when McKayla fought for my rights as the father of the two children. Alyssa did not want to believe it but finally admitted that it had to be true since she had not cheated on Tom with anyone and only I had been with her. We spent a very happy fourteen years together and when the girls turned sixteen fucked my daughters giving them their first sexual experience. As it turned out my secret was exposed to Alyssa and McKayla when my two daughters turned into dogs soon after their sixteenth birthday and I had to shift to guide them in how to shift forms.

Alyssa was shocked but it turned out McKayla had always suspected this and easily accepted me into her bed in any form. When Alyssa finally came around we became a happy family.

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