Cal continued to ride the German Shepherd’s pussy as it licked Mark’s cock. Peter was jacking off and rubbing his dick against Katy’s thick fur. Cal had his hands clasped on Katy’s narrow hips and drove himself deeper into her.
Katy relished the attention of the three young men, especially her brother. She had never thought seriously about having sex with Cal, but she did notice his fine athletic build, and every once in a while she had thought she had seen him looking at her in a certain way. Now here he was, pounding his penis into this bitch in heat, she thought, never suspecting that he’s fucking me, his sister! She lapped greedily at Mark’s thick cockhead, tasting the precum as it oozed from the tip.
“Dudes, this is some sick shit we’re doing, but I’m digging it,” Peter said as he masturbated into Katy’s coat.
“No one hears about this,” Cal said as he fucked the bitch that was his sister.
In a few minutes Cal let out a loud shout—“Oh Jesus, I’m cumming!” He rode Katy harder. “Man, I’m close!” Mark followed. In a few seconds all three guys started moaning and grunting as they shot their loads together… Peter on the fur of Katy’s back, Mark all over her dog face, and Cal into his sister’s canine slit. Katy licked the semen off her whiskers as Cal pulled out of her.
“Damn! Fuck!” call yelled. “That was some hot nasty shit!”
The three of them started putting their pants back on and ignored Katy. She circled the room once and walked back up the stairs. No one was home, so she climbed up to the second floor. She bit the doorknob of her room, went in, then shut the door behind her with her nose. She knew she’d have to take the collar off soon, but she lay on her bed in canine form for a while, feeling her brother’s seed in her pussy.
After a while she realized it was getting late, and flicked at the collar with her hind paw. The collar came off and she felt herself morphing back, her forehead protruding, her nose coming back and becoming dry again, the hair receding back into her body. She moved her long human fingers and stood up. After the amazing day she just had, her human body seemed almost unnatural to her. She put a robe over her scratched, semen-soaked body, and went to the bathroom for a long, hot shower.