I came across this article about a dog who waited for his owner, a homeless man, for a week while his owner was in a hospital in Brazil:  http://www.lifewithdogs.tv/2014/04/homeless-brazilian-dog-waits-outside-owners-hospital-for-eight-days/

The man was injured and then in the hospital for a procedure, and the dog waited the entire time. Finally, the staff let the dog in to see his owner and shared pictures of the overjoyed dog online. Dogs do not require much beyond love-that is why they truly are man’s best friend. I have never met a dog I didn’t love and Seco is exactly the reason why.