It took some time till Chase and the other dog could seperate each other, since the dog's knot was tightly plugged into the former officer's butt.
Only when the knot shrunk and the other dog's penis retreated into it's sheath, both shepards could stand up and get back to buisness.
Chase's mind was in animalistic chaos and he could not think straight. He did not even wanted to, as the instincts the virus had granted him, were much more powerful in leading him through his new life and body then his human mind could ever have been.
His only drining goal was the urge to mate with humans, male or female, to share his gift with them, to spread the infection.
The other dog, Chase's new mind did not need to know who he was, it just mattered that he was of the same pack, whimpered impatiently and looked at the metal wall that seperated the back compartment from the driver's one.
Chase's sense of smell was hightened in an incedible way and his nose was able to regognize a neverending collection of scents.
The whole rear compartment was a whole universe of smells alone, above all the scent of the two sex-crazed shepards.
But Chase's instincts told him to get close to the two humans in the front seats, a male and a female, as they had to be the next to recieve the gift. The pack had to grow, the infection had to be spread. Chase started to drool as his penis slowly started to grow out of it's sheath again.
Mustering all the humanity he had left he walked near the communication button, which would enable him to talk directly to the driver and his passenger.
Pushing the button with one clawed paw, the virus granted him the ability to talk humanly for a short period of time.
"Guys... trouble here... please stop... van... need help here..." he mumbled into the com-panel.
The other dog somehow locked the view-through slit between this and the front compartment with both his paws at the same time, tail wagging.
Closing the com-link without waiting for a reply, Chase turned to watch the other dog, smelling it's arousal as much as his own.
The van slowly reduced speed and Chase noticed (though the back windows of the rear compartment) that it came to a halt on a deserted street somewhere between towns.
His cock was fully erect by now and ready for action...