Long ago when doctors were not skilled in medicine, people had to depend on their own cures. The cure for the whooping cough was to find a caterpillar called "god's horse" with out looking for it and to sew it in a bag. Then tie it round the neck of the person who had the whooping cough and the cough will get better. It is said when the caterpillar is dead the cough is dead too. That was one way people cured the whooping cough long ago.