Dr. Mercola July 30 2007 27,897 views
Aparently cats purr when they are sick as well as when they are happy. The herz of a cat's purr is at a healing frequency. I have had patients who say that their cat will always sit on their arthritis or similar afflictions and they would find it very soothing.
In Australia, they have trained companion dogs that detect blood sugar anomalies in their diabetic owners, detect impending seizures in their epileptic owners and now dogs that can detect cancer in various specimens. They can do this far earlier and more accurately than conventional scanning methods.
Pets also offer unconditional love, and make you laugh.
It has been known for a long time, that pets improve the health and lower the blood pressure of their owners....not sure about my unruly mob!
Dr. Mercola summed it up in one of his recent articles about how if your are not diseased your body doesn't smell.
Cats have a keen sense of smell and can probably detect changes in body chemistry this way. Impending death has got to cause a definite chemical change.