[Nathan Zachary]

"I'd think the cops would be able to get DNA evidence if they wanted to."

You must be watching too much CSI on TV. Any DNA evidence left on this guys severed finger would be contaminated by the DNA of this guys severed finger.

DNA evidence must be free of potential contamination from any other DNA source to be admissible in court.

Dental imprints however, may be evidence, if the police were interested in finding this person. As would finding the person with blood on their face and clothes immediately following this fight in the first place.

[LibWhacker]

You must be watching too much CSI on TV

Uh...Well, no. DNA from bite wounds has been used to convict people for years, even in cases where the DNA was collected back in the 1980s but techniques for analyzing it didn't come along until much later.

[Trailerpark Badass]

DNA evidence must be free of potential contamination from any other DNA source to be admissible in court.

How do they get DNA evidence from rape victims?

[GeronL]

There are cop unions in the SEIU

[SendShaqtoIraq]

Reaalllly. Then how are they able to isolate a rapist’s dna in a vaginal sample from the victim’s?

[stephenjohnbanker]

Thousand Oaks is one of the most conservative cities in the USA. The cops will leave no stone unturned to nail this prick.