From the Houston Chronicle:
DNA — animal and human — leads to man's conviction
Evidence on his shirt linked him to rape victim's dog
DUMAS — A Texas Panhandle man was convicted of rape and sentenced to three life terms in prison after tests showed dog feces found on a man's shirt matched DNA from the victim's pet.
Police sent the fecal matter on Nanez's shirt, fecal matter from the woman's yard and saliva from her dog to a veterinary genetics lab in California, which matched DNA. DNA does not exist in fecal matter, but cells from the walls of colons attach themselves to waste material, prosecutor David Green said.