In a predictable batch of advice about interviewing, Horse & Hound, "the House of Equestrianism" in the United Kingdom, there is a gem:

"Take the opportunity to look around and speak to current employees if possible. You will quickly work out whether it is the right place for you. The look of the yard will tell you a lot."

Whether you'll be working with horses or people, get the look of the yard. But, remember: Horses don't lie but jackasses might.