The day Sam left the military and pursuit body building he always wanted to adopt a pet that could keep him company so he wasn't always home alone. He got a baby dog and he named her Luna as she was going to be his little baby girl. She was petite and was covered in an all light gray coat. She was very quite and didn't need much to keep her occupied. Everyday though Luna didn't understand why he would leave the house and then return after hours of waiting. Regardless she was happy to see him come home every time, but as Luna got older she got more and more curious about "certain" things.

One day Sam goes to take a shower, and as he undresses himself and goes in, he closes the door behind him. Luna comes walking in the bedroom and hears the shower running. She goes to his pile of clothes he had taken off and sniffs it. Luna continues to sniff around the room and finds his underwear that he was just wearing in a pile of dirty laundry. She puts her nose to it and gave it a good whiff. The smell was different this time around. A scent she was not familiar with. The musk that came from the underwear kinda turned her on as she was beginning her heat cycle. She was so confused by it all, but decided to leave it alone for now.

A couple days past and night began to settle in. Sam goes to his room as Luna trails behind him. He takes off his clothes except his underwear and dives onto the bed.

"Up,up Luna".

As he pats the bed giving Luna the indication she can go up. Sam always lets Luna snuggle with him on the bed when he sleeps. It just makes her feel more safer with him near her. They both soon fall fast asleep.

Morning rolled around and Sam was totally spooning Luna. Her back was up against his chest and his arms were wrapped around her. The sun slowly crept through the windows waking Sam up. He lifts the blank up and at that moment his morning wood comes flying out of his underwear slapping Luna's swollen pink lips. Sam and Luna were shocked at what just happened. They both just laid there. The soft supple lips and the feeling of warmth on the tip of Sam's cock made his penis throb uncontrollably. Sam was embarrassed but it felt good even his cock agreeded. Luna stared at her daddies manhood and could smell the same musk from the underwear from before. She immediately knew what it was and wanted it. Luna knew her daddy was a human which made her even more excited. She was happy and trusted Sam.

Sam decided to give a little push and tease Luna for a bit. The tip of his penis rubs up against her pussy and slightly parts her lips open. Luna's tail begins to sway back and forth.

"You like that baby girl?". Luna's tail continues to wag implying her answer was yes.

Sam then proceeds to slowly prod her pussy some more. Seconds later Luna's body starts to react to his prodding. Beads of lubricant seeps out of her pussy giving a nice slick feeling to her pussy as his cock continues to rub up against it. He stopped and looked at Luna to see if she was ready for him to penetrate her. She was in awe by everything and didn't seem to care or stop him. Her instincts had kicked in and she only wanted him. Luna lifted her leg up and leaned her back up against his body while resting her arms on his. She was giving her daddy a better angle to enter her from behind. When he realised what she was doing, he was so surprised and had to ask,

"Do you want daddy Luna?".

She made a small whiney noise begging for him to give it to her. Sam was so intrigued by Luna's reaction.

"Okay baby girl this is just for you."

Sam positioned himself and aligned his cock with her pussy. He slowly moved his hips forward and in his cock went. The swollen lips opened up and clasped around his cock guiding him deeper and deeper inside her. All that teasing made her extremely wet which allowed him to enter with some ease. The heat inside her and the feeling of tightness from all the muscles contracting stimulated Sam's cock making it throb uncontrollably again. Luna was already panting from just the one push alone. She was in heaven.

While inside her Sam had to take some time to adjust to her body temperature. It was quite warm and also it gave Luna some time too to get use it his cock size. Then all of a sudden Sam got a call on his cellphone. He immediately remembered he had work that day. He slipped his cock out of Luna and quickly answered the phone while trying to find some pants. After he hung up the phone Sam turned to look at Luna who was still lying on the bed waiting for him. She stood up and walked over the edge of the bed and turned around with her tail up. Luna presented herself to Sam. Her pink wet swollen pussy bobbing up and down made Sam's cock hard again.

"I-I'm sorry Luna. Daddies gotta go work okay."

He felt guilty for just leaving her right then and there, but he had to go. Luna was really yearning for Sam as a drop of her bodily fluid rolled off her pink lips onto the bed. Luna made a small whimper calling to Sam to help ease her aching. Sam was just standing there horny and worried about his job all at the same time. Either fuck Luna or fuck work.

After contemplating he called his work place and said he'd miss today because he was filling quite sick. The whole time he was talking to his boss he kept his eyes on her engorged pussy. It was tender and it was waiting for his touch. He hung up and threw the phone on the bed beside Luna. Sam walks behind her and places both of his hands on either side of her hips as he admires her beautiful hind side.

"Geez Luna, you sure got Daddy going huh.", as he laughs it off.

Sam placed his cock up against her pussy and slaps it a couple of times. Each slap makes her pussy contract upwards in excitement. Luna's tail sways back and forth as she waits for his entry. The head of his cock is soon covered in her pussy juice as he begins to push in. Luna's lips separates and opens giving way for his huge cock. Her vulva wraps around his shaft keeping a nice tight suction on his cock. The sensation of her warm body heats his cock again away from the cool morning air. Sam saw that Luna was drowning in ecstasy. Her mouth open and tongue hanging out and if he was not mistaken she was moaning under all that panting, so without hesitation he got it on.

Next thing he knew he had a nice slow rhythm going. Each thrust was pure bliss for the both of them. His balls swayed back and forth in the underwear. They were heavy and full ready to fill up anything. He couldn't remember the last time he came and jacked off after he got his job and started exercising. Maybe this was a good time to literally connect with his baby girl that he took for granted and enjoy some time relaxing too.

Sam stopped thrusting and took it slow to relax the nerves. A couple minutes later Luna takes up to torch and begins to move to her own rhythm. It looked like she was humping, but she was actually moving up and down on Sam's cock quite well. Sam let her go at it for awhile until he got close and pulled out. He took her and placed her everywhere trying new positions on the bed.

"God Luna you make Daddy feel so good!". Luna again wags her tail in acknowledgement.

Both of them panting, sweat dripping down Sam's chest, her pussy pulsing, it was all was so good. He didn't hold back. He moaned and made noises he never thought he make as Luna licks his neck and chest.

"Luna your pussy feels so amazing."

She held him tight in her with each contraction she had which applied pressure on Sam's cock keeping him coming back for more. At this point Luna had lost count of all her orgasms. It just felt like she had them once every couple of minutes. She was in love with her daddy, her owner, her master. She had a connection with him that no other can remake. Her feelings were real.

Sam turned her on her belly and propped her hind legs up and her head down. Sam could feel it in his loins. The moment they both have been waiting for. Luna had a grasp on his mind as he couldn't even think straight anymore. All he thought was about her and cumming. The nerves on the head of his cock were ringing like crazy telling him that he had to let go, but he didn't want it to end just yet.

"Just a little more. Come on Luna make Daddy cum".

Hearing that she answers and arches her back changing the feeling inside her vagina and immediately makes Sam go crazy. His cock goes in further inside as she moves her body side to side. Luna's vagina massaging Sam's cock made it all the worst as he holds it together. Minutes pass and nothing mattered now as he vigorously pounds her pussy. The thought of creaming in her ran wild inside Sam's head. Just the slightest thought of her made him lose control as he tries his hardest not let go. The idea of having sex and releasing his cum inside his beloved dog who begged for him turned him on. Her panting, her pussy, everything about her turned him on. He tries to stop think about her, but it was to late.

I'm cumming Luna! I'm c-cumming inside you baby girl!".

With only her clouding his mind his body loses control. He grabs Luna's hips and delivers his cock all the way inside her. His balls slams right up against her body as it slowly pulls up and drains every ounce of his seed inside her. Sam couldn't help but moan with each pulse he feels throbbing, spurting, and shooting hot loads inside her womb. Luna reaches her big orgasm with Sam as well. Her muscles contract and clinches onto his thick shaft as her legs begin to quiver. Her back and her neck stiffen up from the intense orgasm. They both stand there feeling the extreme sensation happening before them. After everything had calm down Sam was is still inside Luna, rock hard too. He took a big deep breath and rubbed Luna's back. He laughs and says,

"Luna I think I'm stuck baby girl. Your holding on so tight to Daddy".

Luna finally lets go and Sam slowly pulls out his erect cock. The head of his penis stops as Sam pulls again popping out making a sloppy plop sound. Hot, thick, creamy cum came pumping out of Luna's pussy and dribbled down her lips onto the sheets. Sam looks at his proud baby and the mess he made. Cum was still pumping out of her pussy, but then Luna turns to look at Sam and repositions herself for Sam to fuck her once more. Sam smiles and says,

"Get ready Luna daddies not holding back this time."

Sam places his rock hard cock on her pussy and pushes in.