Estimating the time of death in domestic canines.
Because 36.1% of U.S. households have dogs, the time of death (TOD) of dogs at crime scenes can be useful to forensic investigators. However, there are few published studies based on postmortem changes in dogs. This study, conducted indoors in still air at approximately room temperature, monitored the postmortem reduction in rectal, liver, brain, and aural temperatures in 16 dogs for 32 h after death. Graphs of temperature reduction were prepared to estimate the TOD of dogs within the first 32 h postmortem. Sex, body mass, and hair coat density did not affect the rate of body temperature reduction, but increased body weight and volume slowed it. Rectal temperature was the most convenient, reasonable site for measuring body temperature. Vitreous humor potassium ion concentration [K(+)] was measured in both eyes at c. 1.5 and 7 h after death. Both eyes had the same [K(+)] when measured simultaneously, and [K(+)] increased after death.
Proctor
Keith W
KW
Tennessee Bureau of Investigation, Knoxville Crime Laboratory, Knoxville, TN 37902, USA.
Kelch
William J
WJ
New
John C
JC
D000818:Animals; D001831:Body Temperature; D001835:Body Weight; D001921:Brain; D004285:Dogs; D007758:Ear, Inner; D005260:Female; D049429:Forensic Pathology; D008099:Liver; D008297:Male; D011180:Postmortem Changes; D011188:Potassium / Q000378:metabolism; D012007:Rectum; D014822:Vitreous Body / Q000378:metabolism
D011188:Potassium