Animals that heal themselves: What butterflies, chimpanzees, and cats can teach us

From the use of plants to homemade repellents, some species know nature's medicinal secrets better than anyone. The Emory University biologist explains this interesting phenomenon in his book "Nature's Doctors: How Ants, Apes, and Other Animals Heal." In the jungle, the savannah, or even in our gardens, animals don't wait for a visit to the doctor to relieve their ailments. They solve their problems with what nature offers: plants, insects, and …