A shelter worker feared that a rescue dog named Don Luis might be losing his sight.
The six-year-old dog sometimes failed to react when people approached him, moved toys nearby or tried to get his attention.
Worried that something serious was wrong, his caregivers arranged an examination with a veterinary neurologist.
After testing his eyes and responses, the vet delivered an unexpected diagnosis:
Don Luis could see perfectly well.
He was apparently just choosing to ignore everyone whenever he was not in the mood to interact.
The shelter said his vision was completely normal and that his mysterious behaviour was simply part of his very independent personality.
They took him to the vet expecting heartbreaking news.
Instead, they discovered they had been professionally ignored.