Dog Cancer Preserves Genes

Genetic analysis of the communicable cancer canine transmissible venereal tumour (CTVT) suggests it appeared in dogs about 11,000 years ago and preserves the identical DNA of the dog from which it originated, allowing a rare comparison of ancient versus modern animals.

Dogs Smell Lung Cancer

Researchers have found that dogs can reliably detect lung cancer from patients' breath alone -- even distinguishing between those with tumors and those with similar-symptom COPD -- although the precise compounds in the breath being detected are still unidentified.

Dog Origins in Middle East

New DNA analysis has traced the earliest domestication of modern dogs as taking place in the Middle East from native wolves of that region about 10,000 years ago.