When Donna Donovan enters WakeMed Hospital in Cary, she's already got a doctor by her side. When Rusty, a two-year old golden retriever, comes with her to greet patients and staff, he plays the part.

We may receive a commission on purchases made from links. Rusted fasteners, unfortunately, happen just about anywhere. Whether it's under the hood of your car or a plumbing fixture in your basement, ...