For a brief time, I used to analyse animal bone in archaeological sites, and came across a puppy buried in close proximity to a human child burial. This was Southern Ontario, about 2,000 years old, if I recall.
Also; up the street from me, in the 1990’s a car dealership was being torn up to make way for townhouses. The dealership had been there from the 1940’s. In the course of tearing up the concrete, a human skeleton was found.
The skeleton was determined to be female, and a forensic reconstruction was done and the police posted a picture in local and national newspapers. I think the cause of death was a skull fracture.
They got a hit; a man said that the woman was his mother, who had disappeared on a certain date in the early 1940’s. Best guess was that the woman and her husband, both patrons of a local booze house got into a fight, he killed her and dumped the body in the construction site, and the next day, the concrete was poured.
