Pediatricians are doctors who specialize in treating children. They must be patient, well-educated, and able to work with children of all ages from infants to adolescents. Pediatricians work long hours in clinics and offices to ensure children are growing properly and do not have diseases. The job requires interacting with patients, families, nurses and other staff. While training takes many years of school and residency, pediatricians can expect higher earnings as they gain experience.