missouri prosecutors were able to rule out the hair belonging to any cat other than one living with henry polkleading suspect in the murder. the first time ever such evidence had been used in a gorgelin of law. polk was convicted and sent to prison for life. >> it's interesting, but frankly it's about to get more interesting because it's one thing to match a cat hair to a cat if you actually have the cat. what if you don't? what if all you have is a cat hair or other forensic evidence, but not the cat? the scientists at davis are working on technology that enable them with just that evidence to provide investigators with a picture of what the cat looks like. >> we genetically type that and tell you whether it's all white, a black and white cat, siamese cat. we will be able to tell you the contributor on that crime scene evidence. what does the cat look like? >> when you consider there cats in 1/3 of american homes, you see what a powerful tool this can be. turning cat hair into something investigators can't wait to get their hands on. in davis, today in the east bay. >>> coming up, we will tel

henry pogue, the leading suspect in the murder. it was the first time ever such evidence had been used in a court of law. polkfor life. >> which is interesting, but frankly, it's about to get even more interesting. because it's one thing to match a cat hair to a cat if you actually have the cat. but what if you don't? what if all you have is a cat hair or some saliva or other forensic evidence but not the cat? the scientists at david say they are working on technology that will enable them with just that evidence to provide investigators with a picture of what the cat looks like. >> we can genetically type that and tell you whether that cat is an all white cat, a black and white cat, a siamese cat. so we can tell you with that evidence what that cat looks like. >> and when you figure there are cats in one-third of americans r american homes, literally 10 million of them, you can see what a powerful tool this could be, turning cat hair. something investigators can't wait to get their hands on. nbc bay area news. >> that is fascinating, isn't it? >> those guys are going to have a hard time getting away. >> let'