Pros and Cons of Tracking in Vet School

Tracking in vet school means deciding what path you would like to follow; small animal, large animal, research, etc., and taking classes that pertain to your chosen track. As it is now for most schools, a student starts out and finishes vet school requiring knowledge in many areas -- serveral species of animals, all types of diseases, parasites and procedures. At least enough in each field to pass boards! What are some of the pros and cons of narrowing your field of study? Forum member MEYAO asks this question, and several forum members have already provided interesting answers and opinions. What are your thoughts on tracking in vet school?