Kyle crawled to biology class climbed up to his desk and sat on his haunches as a dog does at his desk. The teacher Miss Blossom fresh out of college could almost be a model; she is blonde and wears glasses. She is 5' 9" has double Ds and was very fit because she ran every morning before school. She wore a sensible white blouse and had a black lengthy skirt. Class started and she began her lecture.
"Today we will be talking about the estrus cycle in dogs. Better known as being in heat? Class, does anyone know when a dog has her 1st heat?"
Kyle having raised a dog and now being part dog himself answered, "6 months is average for dogs to have their 1st heat, but it varies for different breeds."
"Correct," Miss Blossom continued with the lecture. "Estrus is of course the time when a dog can get pregnant..."
As the teacher continued Kyle was getting turned on.
..."How often does a female dog or bitch (the class momentarily laughed at the word bitch) class calm down bitch is the technical term for female dog don't be so juvenile. As I was saying a how often does a bitch go into heat?"
Kyle raised his hand and something else raised down below. "Most breeds go into heat every 6 months."
"Correct again Kyle I though you would do well in this subject," Miss Blossom continued, "Dogs on average go into estrus for 2 - 3 weeks. Females in heat will sometimes have their vulva swell up..." Miss flowers then began to show pictures of dogs humping.
This would never have effected Kyle before, but now that he was cursed this talk about dogs in heat was really making him horny he was at full mast at this point at 8 inches and actually drooling.
"...A male dog can sense a female in estrus from far away will mark the territory with urine." Miss Blossoms showed a close up of a male dog being knotted to another dog.
This was too much for Kyle. He ran up and started humping the teachers leg. He couldn't help it.
The class started to laugh, Kyle was so embarrassed. Here he was humping the teacher's leg in front of everyone like a common dog. (Of course he is part dog) At the same time he could not stop either he just kept on going. It was shameful but he kept going. The students just kept on laughing.
The teacher said, "All right calm down that's enough" The class stopped laughing. "This is perfectly natural." Kyle just kept on humping as Miss Blossom continued, "Kyle is a human-dog hybrid. He does think as a human but has dog instincts. I thought this might happen today but, estrus in dogs is part of biology. As his dog instincts take over he can't help what he's doing. I am sure he's almost finished." Kyle was almost finished and as he came the teacher gave the homework assignment not even the least bit concerned with the semen on her leg.
One of the girls who saw this had a secret furry fetish and ironically was named Lassie. After the bell rang she told Kyle how much it turned her on and to meet her after class.