The Howling.

Kelly was having this dream about a time when she had cuddled a neighbour's dog and it had started humping her leg with its erect doggy penis. She was both horrified and aroused, and she just had to reach down and stroke it. The dog grew in size, became shaggier and hungrier and....
She awoke to the sound of howling. It was dark outside. She must have slept through the afternoon and early evening! Jumping up, as if trying to make up for all that lost time, she raced to the treehouse window and looked outside. It was a full moon, so she could recognise most of her surroundings in the faint glow. She could hear the waves on the shore, and somewhere, the distant bellow of dragons as they mated. Just as she was about to turn away, she thought she saw some shadows moving at the edge of the woods.
Slowly, they separated from the deeper shadows and she could see them clearly- a pack of wolves, wild hunger in their eyes. The front male was a large, shaggy beast with torn ears and a slight limp. Boy, had he been through the wars! They were downwind of her, and the male raised his muzzle and sniffed the air. He was looking right at her.
Kelly knew that wolves had a perfect sense of smell. Then she realised, her dream had made her hot, and wet. The male had smelt her arousal! She became flushed, and excited. She climbed down from the tree, and shifted into a sexy bitch, with golden fur. Now truly a wonderful specimen of a female wolf, she padded out to meet the pack.
They circled around her, growling and baring their teeth. Had she got it wrong? Were they going to eat her instead? Just when she thought she'd better turn into a dragon to save herself, the alpha male circled closer, sniffing at her swollen vulva. His nose nuzzled into her wetness, and she felt herself go loose. With a growl, he jumped onto her back, thrusting his penis until it entered Kelly's lupine pussy. Kelly felt her cervix undulate around his penis in acceptance, and she felt his doggy cock swell inside her. It was a truly amazing feeling!
Alpha was swollen, and locked inside her. His growling had gone from being menacing to being a turn on, a kind of sex talk. As she pulled against the lock, she felt his semen pulse up inside her, first one spurt, then another. She felt her vagina clamp around his love muscle, and rocked back and forth on him, feeling the pleasure of his swollen dick held tight inside her.
In moments his squirts became gushes, and she felt filled by his cum. Kelly went to leave, but she couldn't! They were stuck fast together! Slowly, Alpha's cock hardened again, and again they fucked. The rest of the pack milled around them, sniffing and waiting.
After the third time, Alpha was finally able to pull out. He gave her used vulva a few farewell licks, then trotted off with the rest of the pack behind him.
That was enough for one night! Kelly changed back into human, and wobbled back to her tree house.