Breed her!

“You’re in heat, aren’t you, bitch?” You hiss.

“Yes, Master,” She moans, still panting like a dog.

"Then here's what I'll do," You said, "I’m going to breed you, slut; I’ll give you a whole litter of little puppies to care for. Would you like that, you little bitch?"

“YES!” She wails, “BREED your little doggie with your BIG ALPHA COCK!”

“BARK FOR ME, BITCH!”

“ARF ARF ARF ARF ARF!!”

With a roar you ram your cock against her cervix and blast your seed into her fertile pussy. She screams at the top of her voice like a wailing banshee, forgetting to bark like a good doggie as her cunt spasms around you, your orgasm setting off her own. You decide to let her off for forgetting to bark… this once.

Panting, you pull out of her fertilized pussy and she collapses to the floor, like a puppet whose strings have been cut. Squeezing her ass you coat her cheeks with the last spurts of your cum. She looks up at you, the adoration of a dog in her eyes, and you smile as you crouch to gently stroke her hair.

“Never take off you collar,” You tell her, “Not when you sleep, not even when you bathe. Always remember this: You. Are. Mine."

She smiles brightly, looking utterly satisfied.

“Arf!” She barks.