In most cases, more than one candidate is interviewed for a position before an offer of employment is made. This is your chance to tell the interviewer what makes you a better choice. However, remember that being confident and being conceited have a fine line of separation. Highlight your strengths, but remember to be humble.
"I believe my dedication to my studies and the compassion that I have for others is something that will make me an asset if I am given the opportunity to work here. I look forward to being able to become a part of a team and becoming an asset to the teamwork that needs to be accomplished."
"I am passionate about learning more about veterinary medicine and want to work in a place where I can stay for the long-term and become a strong part of a team. I believe my history of dependability and my drive to work hard will make me a great candidate for this position."