Demonstration

"Ana, I can tell the wheels are turning in your head about the best way to embrace your fetish for acting like a dog during foreplay and sex."

Ana blushed.

"I think the collar is a great start, but an anal plug with a dog tail would perfect the fetish."

Ana blushed more deeply.

"It's obvious you want me to fuck you doggie style right now. You do owe me for skimping me on my fees, so let's just get this over with."

A couple of minutes later, both Jack and Ana were naked, and she was on her hands and knees on the floor, and he was behind her fucking her.

"ARF! ARF! ARK!" she called out as she was fucked.

"Great, you are so sexy when you act like a dog!" said Jack.

"ARF! RUFF! WOOF!"

Finally, Ana was brought to orgasm: "WOOOOOLLLLWWWW! OOOOOOWWWWWWW!"

Jack finished up right afterward.

He finished up, and he and Ana took turns washing up in his bathroom.

Later, she was dressed again in her micro-shorts and halter top, and Jack was back in his suit.

"Now, I'm going to need to double my fee. It's appropriate for me bringing out that sexy fetish of you acting like a dog in heat."

"Of course," said Ana.

"Also, invite me over a few times a month, so I can fuck you doggie style."

"Yes, of course. Sounds great."

"OK, I'll see you later."

Ana left.

Jack had some time before his next client was do.