I had to introduce Louie to a new dog sitter. His standard option was unavailable for a few days of travel coming up, so we found a backup option and set up a time for them to meet. Now, being a 15-year-old Golden with as much stubbornness and attitude as age, he doesn't trust just anybody. (Shocker, an elderly male has opinions about people.) So typically, he proceeds with caution, or at least until you give him a treat or a scratch.