Case Closed, Thanks to Kitty

Fido may keep criminals away in the first place, but Fluffy can help the police bust them. As any cat owner knows, felines shed a lot of fur, and that fur — which clings to the skin, clothing and shoes of visitors — can be used as forensic evidence.

“The increasing popularity of the domestic cat as a household pet has unknowingly fostered the distribution of potential crime scene evidence across millions of households,” researcher Robert Grahn told Discovery News. ”Cat fur obtained from a crime scene has the potential to link perpetrators, accomplices, witnesses and victims.”

Scientists have established a DNA database that will allow cat fur to be used more effectively as evidence in criminal cases. The database focuses on mitochondrial DNA, which is passed down through the maternal line. This type of DNA has a high mutation rate, so it’s more identifiable between individuals, and its genes exist in high amounts.

Grahn and his team at the Department of Population Health & Reproduction at California’s UC Davis have collected DNA samples from hundreds of cats during routine spay and neuter surgeries.

Another form of DNA called standard short tandem repeat (STR) has already been used to convict an accused murderer. Douglas Beamish of Canada had the fur of a long-haired white cat stuck to one of the pockets in his jacket, which was genetically linked to the cat of his victim. Beamish is currently serving a 15-year sentence.

The DNA test created for the STR marker, called “Meowplex”, will be used in tandem with the new mitochondiral DNA database to provide criminal investigators with a furrific resource for solving cases.

By Stephanie Rogers, Mother Nature Network

189 comments

Oleg Kobetz
Oleg Kobetz2 years ago

Thank you.

Oleg Kobetz
Oleg Kobetz2 years ago

Thank you.

Hattie Wallace
Laverne Wallace5 years ago

Kitty on the case.

Merelen Knitter
Merelen Knitter5 years ago

This sounds hilarious and awesomely helpful.

gail d.
gail dair6 years ago

thanks

Bon L.
Bon L.6 years ago

Thanks.

Ita D.
Ita D.6 years ago

Awesome.
About time.
Looking forward to even more innovative processes!

vivian l.

great

Olivia S.
Olivia S.6 years ago

That's really cool.

Monica D.
M D.6 years ago

Excellent. Cats rule.