Stripe the Wonder Dog is just like this. As a puppy in a household of 14 dogs (they were breeders and competition herders: not a puppy mill,) she was extremely cagey about hiding the chewies. I even caught her glancing side-to-side furtively before she dug a hole for her rawhide in a nook against the side of the house.
And, file this story under “Dogs: Doing Jobs Cats Won’t Do.”
And, this is a fascinating article in FT about Moscow’s stray dog population. It’s not what you think. At about 35,000, the population has reached ecological equilibrium keeps the vermin population down and have adapted to various sub-niches within the urban environment. The are truly “feral” but not a danger to humans, apparently. As a group, however, they cannot be domesticated without the same selection process that our ancestors used to domestic wolves.