Pros
A good entry-level position in the veterinary industry. They'll hire any reasonably competent individual, with or without certification. The doctors tend to be average or above average. Many of them work at other practices and pick up shifts at Banfield on their off-days. For routine services such as vaccines, Banfield is relatively quick and affordable.
Cons
Low standards in hiring practice mean you'll be picking up the slack and correcting the mistake of your sub-par co-workers. Pet Nurse managers are often too busy doing dentals and helping in surgery to provide any oversight of new hires. This results in the "blind leading the blind" to an extent. Banfield is also the McDonald's of veterinary clinics, so much that I often wanted to ask my customers if they wanted fries with their pet's vaccines. This isn't so bad if you want the speed and efficiency of a drive-through with your veterinary care. However, in my experience, most clients prefer quality time when their pet's health is on the line. Its hard to give this sort of attention when you're under-staffed with inexperienced PetNurses and are being pressured to rush through a long line of customers and upsell, upsell, upsell. Also, there was a number of people while I was working there that were fired for stealing drugs from the poorly supervised pharmacy.