Good luck, hope you get it and it's good for you. I worked at a Petco years ago and worked with great/knowledgable people. They hired me cause I was in there almost daily to look at the reptiles and fish. Manager gave me an interview as a formality.

Warning: If you get to work with decent people and don't have to deal with customers much you should be in good shape. The rules Petco has and the amount of people they typically do not have working can suck the life out of you. Many times, there is less than 1 person scheduled per department. Then again, that job made me realize retail is not for me.