You focus your attention on the barking behind you and see another male shepherd emerge from your baby brother’s room. What is more striking with him… is the fact he is no longer a baby now. What walks up and licks your muzzle affectionately is another fully mature male German shepherd. Two new discoveries to note about the aggressive programming of the virus: it accelerates both growth and maturity where needed, plus it selects and maintains breed consistency within a family bloodline. It seems to know when to stop the acceleration as well.
Your brother then reaches under you and laps up the semen in the carpet. He then moves to the throbbing cock and licks it as well. You notice his tail wagging anxiously and half of his new cock hanging out of the sheath. Your urges scream out to reach under and lick that cock of his and then move to his ass and rim him out good. Before you have time to think your head is already under him and lapping at the precum dripping from his pink shaft. Then your muzzle moves up and to his butt hole, for thorough licking.
Meanwhile your brother begins to groan and the feeling of him shrinking inside stops you. The licking from your brother has also caused your cock to shrink and retreat as well. Your brother then dismounts and sits down to clean himself off. Little brother then moves his muzzle to your used hole and begins lapping at the sex juices leaking out.
The three of you are stopped with the sound of the back door closing loudly. Heavy human footsteps are then heard coming up the carpeted stairs. Your ears perk up just as the human shows himself...