Murder Victim's DNA on Sausage Eaten by Dog - Possible?

This link, supplied elsewhere by Harmonious Discord, has prompted some thoughts concerning edible murder weapons.

Please note that nobody gets killed in the above story, but a sausage does feature prominently therein.

Let us assume that a guy breaks into someone’s house. He tiptoes into the kitchen, looks in the refrigerator and, after careful consideration, removes from it an 8" sausage. He ascends the staircase and enters a room where he espies someone asleep in bed. The housebreaker, for reasons best known to himself, beats the recumbent sleeper to death with the aforementioned sausage. Blood and other messy substances are drawn from the victim in the process of this heinous crime.

Our killer, who has brought his dog along for this adventure, then feeds the sausage to the hungry animal, thus removing all visible traces of the murder weapon from prying eyes e.g. the police.

However, if the police suspect the dog of eating the instrument of death, and a forensic scientist operates on the beast in order to examine the contents of its stomach, would any traces of the victim’s DNA remain detectable either on the sausage itself or in the dog’s gastric juices?

If a sausage doesn’t work for you, try substituting something more substantial that is (a) capable of killing someone and (b) palatable to a dog, such as a leg of lamb or a particularly large meatball.

Many thanks.

I only wanted to say that I thought you were going to postulate a victim who was made into sausage and then fed to the dog. :slight_smile:

This is what I thought, too, and my question was: why test it for dna?

I suspect that you could pick up any uncooked meat’s DNA from the dogs faeces - e.g. these guys Quantification of damage in DNA recovered from highly degraded samples – a case study on DNA in faeces | Frontiers in Zoology | Full Text get herring DNA from sealion faeces, but I suspect you would not be able to detect a blood splatter on an ingested sausage as the levels are too low - e.g. the herring DNA was 8-50X lower than the sealion DNA background