The Chihuahua is known by its small size, big ears, large, dark eyes and its eccentric personality. Some have even joked that the Chihuahua is not really a dog but a descended of rats. Although small in body and size, it is a strong, robust breed. The body is longer in length than its height, and the coat can either be long or short depending on the variety. Colors include brown, fawn, chestnut, and black and tan.
Case studies are descriptions of a real life experience, related to the field of study or training, which are used to make points, raise issues or otherwise enhance the participantsâ understanding and learning experience.
Observational studies are ones where researchers observe the effect of a risk factor, diagnostic test, treatment or other intervention without trying to change who is or isnât exposed to it. Cohort studies and case control studies are two types of observational studies. Cohort study: For research purposes, a cohort is any group of people who are linked in some way. For instance, a birth cohort includes all people born within a given time frame.