Depending on the position you apply for, it can go a few ways. Going for an animal care technician, I started off in human resources, and then went to the veterinary office for the main part

Involved a brief phone screen followed by an in person interview on location at their office building in Germantown. Easy enough to locate. Interview was light and breezy, and largely an introduction to the specifics of working there. Had a good conversation and was out in about an hour.