A second dog at the scene ran away and the driver notified animal control. Officers arrived soon after to look for the runaway and found three dogs in the church grounds.
At the same time the officers were corralling those frightened, filthy dogs, a woman notified SPCA that she had found four more further along Kokopu Rd near Whatitiri, a few kilometres away.
The find brings the total found in the two incidents to 14, including the one that died. It isn't known if they were pure-bred shih tzu or crossed with another toy dog breed. None were microchipped.
They were in poor condition but not emaciated, Ms Sweeting said, and all had extremely matted coats, some so knotted their feet were completely covered and their limbs held.
Two might be slightly older and could have had litters recently. However, because they were still in shock it was too soon to tell if they have other health issues or deformities.
The six young bitches found two months ago were in similarly bad condition, Ms Sweeting said.
"We don't know if we're dealing with someone who can't cope with a situation they've found themselves in and can no longer care for their animals, or it might be a hoarder (of animals). It could be someone out there breeding these dogs, or they might have been brought here from outside the district."
Ms Sweeting said staff have notified vets, and inspectors might do a door-to-door search of the area.
In the meantime, the very smelly, matted little dogs would be shaved, examined and receive other remedial care before being tested to see if they are well enough socialised to be rehomed.
Anybody with information can ring the Whangarei SPCA anonymously on 09 438 9161.