ohmidog!

A sheriff’s deputy in Texas whose scent tracing dog has identified suspects in crimes has been named in two lawsuits arguing that scent evidence is often scant evidence.

The Victoria Advocate reported Sunday that the work of Fort Bend County sheriff’s Deputy Keith Pikett led to 62 days in jail for Calvin Lee Miller before he was cleared in the robbery of one elderly woman and sexual assault of another.

A swab of Miller and the scent from the assault victim’s sheets were sent to Pikett, whose three bloodhounds indicated Miller’s scent was on the sheets.

The other lawsuit involves a former Victoria County sheriff’s captain who became a murder suspect based on scent evidence, the Associated Press reported.

No laws or regulations govern scent lineups, and critics say they are often imprecise, but they’re admissible in courts across the nation.

“This is junk science. This isn’t even science. This is just junk,” said Jeff Blackburn, chief counsel for the Innocence Project of Texas. The group works to free wrongfully convicted inmates and started to investigate Pikett recently.

While dogs have a keen sense of smell — sometimes 10,000 times more sensitive than humans — and while every human exudes a different scent, critics of scent line-ups say are easily influenced by human involvement such as the use of a leash , the presence of many scents on evidence or in lineups and the fact that humans must speak for dogs in court.

Pikett’s scent work led to a search warrant for the house of former Victoria County sheriff’s Capt. Michael Buchanek during the 2006 investigation of the murder of Child Protective Services worker Sally Blackwell in Victoria.

The deputy’s dogs walked from a spot where Blackwell’s body was found to her home about five miles away, then to Buchanek’s home nearby. Through a scent lineup, authorities obtained a search warrant. Another man eventually pleaded guilty in the case.

The lineup was “the most primitive evidential police procedure I have ever witnessed,” said Bob Coote, who worked with police dogs in the United Kingdom. “If it was not for the fact that this is a serious matter, I could have been watching a comedy.”