Hello, my name is Freya and I work in a Veterinary Clinic in a small village in Holland. My job is to assist the veterinary surgeons in their research work with animals. They deal mainly with dogs and I care for the animals when the clinic closes in the evening and at weekends. I love all the animals and would do anything for them, but my favorites are the dogs.

The current research involves dosing the animals with human genes to try and help with human reproductive problems. What this means, in reality, is that they are using the dogs to substitute for humans by giving them hormones and gene therapy to make their bodies emulate human bodies. It's much easier to get a license to experiment on animals rather than humans.

One of the research experts explained that the male dogs are now capable of fertilizing a human egg and the female bitches are capable of conceiving and bearing human babies after they have gone through the program to 'culture' them. They are soon to try and create the first baby to be born to a female dog in the whole world, although the scientist who confided in me said they have already proved it works in the kennels and aborted the fetus after 4 months due to ethical problems.

Apart from my real love of animals, I have another reason why I devote my life to them... I have sex with the male dogs and would do this job for nothing just to enjoy the orgasms they give me. I find that the best time to have good sex with my dogs is dependent on my menstrual cycle. The odor from my vagina always excites the male dogs, I suppose it reminds them of the smell of a bitch. If I'm having a period my vagina gives out an especially strong odor and the male dogs see that as a signal to fuck me.

When a dog bitch is in heat her genitals become blood- filled, swollen and give out a higher amount of odor. The bitch will then, when given a chance, turn her back to the dog, to show the dog that she is ready to be mounted. The male dog will then often sniff at her vagina and lick at it for some time. After some time he will mount her. This procedure works the same with women. When a dog smells my scent he will approach me and start to sniff, after that he will try to lick me.

I always get a large dog with a good size penis as a thick penis provides more friction on my clitoris. I love the bone that a dog's penis has running through it. When it hits my clit or my cervix it never fails to excite me. Because when it comes to dogs, the size of the penis is irrelevant compared to the way it's built.

A dog's penis looks completely different when compared to a humans. Instead of having a foreskin like the human, its entire shape is like the tip of the human male, that means reddish, and very sensitive to touches. The lack of foreskin, means instead that they have a 'coat' in which the entire penis withdraws when it's not erected. This coat is furry, and hides the penis which is much larger than the sheath is, and when erected it draws back, and allows the penis to push out and enlarge. Instead of having the familiar and sensitive 'mushroom', like the human, it is pointy at the tip, then growing larger after 2-3 cm. The entire penis is as sensitive as the human's tip.

When a dog gets aroused his penis erects and leaves the protective sheath. Unlike a human the dog creates the sperm while his penis is erected, and he is aroused. Another thing that differs is that the dog's penis will ejaculate during the entire sex act, from the first moments of erection to the end of the intercourse, this makes the intercourse more pleasurable. But the most important feature, is the one that makes the sex act most exciting, the dog's KNOT...

When a dog enters the bitch and starts his humping motion in her vagina, he also starts coming instantly. But after some time, when the male dog reaches 'real orgasm' then the base of his penis will swell. The male dog will then try to push this knot inside the bitch's vagina. Once inside he will not move any longer, instead he will keep a constant pressure to assure that the knot is really inside.

During these seconds the knot will start swelling even more inside the vagina to such a size that it won't be able to extract. During this time the dog will start to ejaculate even more intensely inside the vagina. The knot's function will then be to keep the mating couple together for some time.

The reason is to ensure that the sperm is deposited deep inside the vagina and to increase the chance for insemination. Many women only have sex with dogs because of this feature.

Making love to a dog can be very simple, as they are always ready for you. However I have these items handy when the itch starts, just to make my pleasure even greater and to make it good and safe for me. I put socks, on my lover's paws to prevent them from scratching me. But, most importantly, with these dogs, I wear my Contraceptive cap and spermicide, to prevent inadvertent pregnancy!

The dog starts coming almost instantly when his penis erects. At the beginning the spurts are very slow and the amount of liquid is very small, but the more aroused he gets the more liquid will he produce. When I'm prepared to let him enter me, I find it's wise to have a big towel under me so that his semen won't stain the carpet or sheets. I should add that these dog's sperm CAN get you pregnant! Therefore I take my usual precautions to prevent that problem. I can't take the Pill so I have to use a contraceptive cap, which I fill with spermicide and have to leave in position for at least 6 hours after love making has finished.

There are several positions in which I can make love to my dogs. Each position has an advantage, but it's good if you know something about all positions, that is which one gives the most pleasure, which one is where the penis enters you the deepest, or which one where my clitoris is mostly stimulated and the most important, in which position I am likely to end up in a 'tie' with the dog. The missionary position is probably the most used position through time. In the missionary position the woman lies on her back and the man is above. The missionary position can also be used when making love to a dog, it gives the woman a chance to supervise the entire session and to see the entire process.

The missionary position can be performed in bed or on the floor. If the dog is a big one, it's good if you have 1 or more pillows, the big 'hard' model is preferable, which can be placed under my body. By placing them under my buttocks, the lower part of my body will be in such an angle that the penis can be inserted easily into my vagina. When in position you guide my lover's penis, to make it easier for him to enter you, and when he is inside you I just try to relax. The lubricating semen of his will make it extremely easy, and within a few seconds he will start to make the so familiar 'humping' motions.

What is interesting and enjoyable is that the rhythm is pretty fast and the session is very wet. During the entire session the dog will come inside me, lubricating the walls of my vagina. But when a dog approaches 'real' orgasm his penis will start to swell even more, especially the base of his erection. This is the moment to decide whether I should let him get in a tie with me or not. If I don't want to then I try to push him away by grabbing gently around the base of his penis, however it's the tie that makes it extremely pleasurable, and by not engaging in a tie with my lover, I wont get the ultimate feeling.

If I let him keep humping me his penis will swell even more, and suddenly he will stop with his entire shaft inside me, and at the same time I feel the warm semen spurting inside me, his penis pulsing. The amount of semen in each jet increases, and the watery and transparent appearance of it is changed into a more whitish liquid, which reminds me of human sperm. In a few seconds his penis reaches such a size that the base of it will be up to 3 times the diameter. The base of the penis that has swollen to such a size is located just inside my vagina. The knot will be in my vagina and I feel my body is completely filled.

A dog's body temperature is very much higher than a human's, therefore I can feel the heat of his warm seed spurting deep inside my me, and due to the pressure caused by his enlarged penis, it will soon spread in my entire abdomen. The knot means that nothing will leak out. After a minute or two I will feel his penis swell even more, and I sometimes panic at some point when I think that he will swell to such a size he will split my vagina. The enlargement comes slowly and the vagina accommodates to the size easily. During the tie the dog might start to lick my face, the reason a dog does this is to show his appreciation, to his mate that he has been chosen to make her pregnant. What I have to check before I end up in a tie is that I don't really know how long I will be in a tie with the dog. 'Normal' time for being in a tie is about 5-15 minutes. However it's not unusual to find dogs, which end up in a tie for 30-45 minutes, especially the bigger dogs. I can give you an example, with a lover I have been in a tie for about 4-5 minutes, which is the shortest, but with the same dog I have been in a tie for over one hour.

Therefore I have to be calm and have more free time than I would when making love to a man. This is the main difference in the sex act between a man and a dog. A dog wont leave you after he comes, instead he will remain hard inside you, coming all the time he is in you. It's important that I don't have to suddenly go to the kitchen to take something out of the oven or similar.

When the knot has swollen in such a size it reaches it's maximum my vagina will probably be full of his seed, as a dog produces about 2-6 times the amount of sperm a man does.

The missionary position gives me maximum clitoral stimulation. But I also get stimulation of my clitoris and breasts by his fur, and it feels extremely exciting having his humping body in contact with my naked skin.

When the knot is just inside my vaginal opening my labia will pout out, making the clitoris protrude from between my vaginal lips. This gives me an excellent chance to masturbate. It often doesn't take more than a few touches due to the fact his knot is pulsing inside me, stimulating the clitoris from inside to induce multiple orgasm. My body will be flooded by orgasm after orgasm, my vagina twitching and squeezing my lover's penis uncontrollably for several minutes.

During the later part of the tie I will feel my lover's penis start to get smaller, and I will also feel that his spurts aren't as powerful as earlier. The liquid will also consist of less sperm and a more clinging substance.

The Scientists explained that the reason for this is to 'close' the entrance to the womb, to create something like a plug to hold the sperm that has entered inside it. This plug has the function of assuring that a high amount of the dog's sperm will remain inside the womb and to make a pregnancy possible. However, because I could become pregnant, I have to rely on the latex rubber of my Cap to prevent semen from entering my womb.

I had once decided to try anal sex with a dog and for this reason I had left my Cap out, feeling that even with my anus full of dog sperm, I would be safe. However, as it turned out, the animal I had sex with that night appeared to know what was what on a woman, and no matter how many times I adjusted my position to take him anally, he pulled back and came forward again to try and take me vaginally. In the end I had to return him frustrated to his kennel, as he would not follow my plans for sex that evening, I think it was because of that night that I tried a more risky form of sex with my dog.

I don't know what got into me that day, it was a Saturday and I was alone in the Clinic. I had taken Major, a large Great Dane for an extended walk and I took him back to my room. As I reached for my Cap and the can of spermicide I suddenly had the urge to ride bareback! Putting the Cap down on my bedside table I adopted the 'doggie' position but 'chickened out' when I saw the dog's erection develop. I could see pre-come leaking from the tip of his penis already and I knew it was dangerous. However, the urge wouldn't go away so I compromised and put on a pair of panties to protect myself. Bending over the bed again I watched Major approach me. Shaking with anticipation I saw his erection build again and he ran forward to take me.

He began humping at my panties covered backside and his pre-come stained the material. I knew I wouldn't be satisfied without full penetration and in a moment of madness I reached back and moved the gusset slowly to one side. My heart was pounding as he tried to connect with my unprotected sex organ. Then he connected and penetrated my first inch.

I panicked and tried to back out of the whole thing but his next two humps forced his all eight inches of his penis fully inside me and the weight of him pushed me down on the bed. It was as if he knew I was capable of conceiving and he seemed determined to 'do' me! All I could do now was wait until he ejaculated and pray that it was the wrong time of the month for me. In the corner of my eye I saw my contraceptive Cap on the bedside table.

It was useless now as the dog came almost immediately and I felt him thrusting the contents of his testicles deep inside my womb. He quickly slipped his knot inside me and rapidly expanded it to complete my treatment! I was tied to him for a full hour and as he licked my neck and the side of my face he almost appearing to be gloating at his conquest. I got lucky that time as I started a period two days later. To teach him a lesson I forced him to lick my period blood and baited him for failing to impregnate me. The trouble is that I was left with the urge to have risky sex with these dogs and I decided to keep a cutting from an advert from an abortion clinic in case I weakened and a dog managed to fertilize me.

It can be very stimulating to feel a dog's penis in my mouth, to see it so close, to feel his seed spurt. One day I know I'm not going to be able to resist the urge to take a dog's knot in my mouth. It's desperately dangerous as the erection will be down my throat and the knot will be trapped in my mouth. It will definitely prevent me from breathing through my mouth and it will leave only my nose to breath with. I may have to breath this way for up to an hour if the dog's knot persists.

The scientists have also managed to isolate the canine pheromone which causes a bitch to go on heat. I stole a syringe of this fluid last week and sprayed my knickers with half of it one evening after hours. The effect was staggering... Every male dog in the place was affected. Wherever I walked the dogs developed erections in their cages and clawed at the wire to get free and at me! The sensation of power was overwhelming as I strutted through the kennels causing mayhem!

Unable to resist the feelings any more I let myself into a cage with three German Shepherds in it. Instantly I was faced with three huge erections as they sniffed voraciously at my crotch. I was soaking wet with the effect it was having and all the dogs' attentions. They all but forced me to my knees and I hastily let myself out of the cage and returned to my room. I couldn't risk being gang raped by three dogs that were capable of inseminating a woman. Back in my room I frigged my fanny to orgasm, but still I was not satisfied.

I knew I would weaken and so it turned out. Fitting my Cap I went back to the kennels and immediately they caught the smell the sleeping dogs awoke. That stuff was incredible! I let myself into an empty cage that was linked to a cage with the three Alsatians. I got down on my knees with my backside towards them and watched as they clawed and the wire between the caged in a frenzy! I looked wistfully at the latch locking the gate between the cages and then in a moment of madness I reached up and opened the gate just enough to let one of the dogs in.

It was all I could do to stop all three from forcing their way into the cage with me. Snapping the gate shut the lucky dog that had got in mounted me instantly and his leaking penis soon found its way to my sex lips. I was facing the other dogs through the wire as their partner fucked me mercifully, coming in me continuously.

The outside dogs licked their lips and howling in anticipation of gang raping their 'bitch'! I knew that after this dog had done with me that I wouldn't be able to resist letting the other two in to fight over me. All the dogs wanted to have me that night. The current dog formed his knot in me and the others calmed down seeming to know that I was temporarily 'out of action' taking my chance.

I undid the catch on the gate and they rushed to sniff and lick me. Two huge Alsatians waited for me to become free to fuck again. I was their bitch and they were now in control! As the first dog's erection wilted and he slid out of me the other two fought and snarled to be next. I shut my eyes and waited for the victor to take me. I didn't have to wait long as the black and brown male connected with me and pushed viciously into my slit. The greasy liquid from the last tenant helped his penetration and he humped liked the end of the world was due.

He was a large dog and I felt him touch my cervix with the spurting tip of his bony penis. A wave of panic swept over me again as I feared that the latex rubber might not hold out. My period was two weeks ago and I was definitely due to ovulate. His semen joined the rest and the knot formed within me. I took the opportunity to frig my swollen clitoris to a massive orgasm whilst the third dog stood behind me as if in a queue.