Saline-alkali land.
Refuse landfill.
Most of the stray dogs coming from the dog market were large dogs. It could be said that only large dogs could survive the competition of the jungle. Although their blood was not so pure, if they had been small dogs like Pomeranians or poodles, they would have basically all been carried home and raised already.
The rest were odd mongrels, some of which were the second generation of stray dogs mated with each other, and some of which were experimental products that villagers near the dog market had intentionally crossed with purebred dogs in order to beat their opponents in dog fighting and earn money.
When outsiders first came to the landfill, they had already been frustrated by stray cats, and they were also hit head-on by the Aborigines.