From reptiles to birds and mammals, veterinarians can be the ones to understand how to handle animals when they are in need of medical attention. Studying veterinary medicine may involve learning surgery techniques and other medical treatments.

A Doctorate of Philosophy, or PhD, may require eight years or more to complete, as well as a dissertation. In most fields, the possession of a PhD qualifies the holder to become a professor of a chosen subject. There are many different programs available.

Part time learning allows one to obtain part-time degrees even if one cannot attend school on a full-time basis. One can learn at his or own pace, gradually accumulating credits which count towards final qualification.