Which of these MOS's is better?

I am joining the Army and have narrowed down my preferred MOS's to these: Dental Specialist, Animal Care Specialist, and Operating Room Specialist. Which of these would be the better job?
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Depends on what you like more... as the low man/woman, you'll do most os the cleaning and grunt work for a while... If you like helping to clean peoples teeth, then... If you want to help animals... or do you want to work in a hospital? The Army wanted me to be a Brain Surgeon Specialist, but I wanted to destroy stuff
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