» Dirt.
» Hair, fur - these can contain bacteria from the surrounding environment.
» Chemicals and their residues, eg herbicides and pesticides such as 1080, brodifacoum etc.
» Jet fuel and fly spray. Back in the wild west days of venison recovery, jet fuel spillage was a major contaminant, as was fly spray. Animals were often left on the hill for hours at a time so fly spray was liberally used to kill flies, preventing rice (fly eggs) from being laid on the carcasses.
» Contents of the stomach, from the rear end (faecal, otherwise known as sh*t) and ingesta (partially undigested food) from the oesophagus.
» Residues, like penicillin in the case of farmed animals.
» Milk and urine, often overlooked as contaminates.…