Stepping in dog poop is usually just bad luck, but for some criminals it’s a step toward the slammer.
That’s because dog feces pick up DNA-bearing epithelial cells from the colon on their way out. When those feces are found on the shoe of a suspect — one who claims not to have been anywhere near the scene of a crime where matching poop was found — a case may be cracked.
These are the clues prized by a tiny, three-person laboratory at UC Davis — the only accredited forensic lab in the country dealing in animal evidence.
“The shoe scraping I got, I remember …