AP Historical Hard Drive 2

Tangle, a cocker spaniel, attempts to sniff out bladder cancer from a patients' urine, in this image made available in London, Thursday Sept. 23, 2004. Six dogs were trained to pick out urine samples of patients with bladder cancer from those of people with other diseases and healthy individuals, in a new study published in the British Medical Journal. The dogs - a mongrel, a Labrador, a papillon and three cocker spaniels - were trained over seven months to discriminate between the different types of urine sample, and in the final tests each dog, none of whom had previous experience in scent discrimination, was offered a set of seven urine samples, including one bladder cancer sample. The dogs identified their chosen sample by lying down next to it, with each dog doing nine separate tests.(AP Photo/pa-ho) ** UNITED KINGDOM OUT: MAGS OUT: NO SALES: **