Sad story
But no lah. Dogs can't and don't cry tears like humans. They whine or whimper to show their sad emotions.
Within any species, there are always outliers, genetically and/or spiritually, that are capable of features or actions that the majority of the rest of their species are not predisposed to.
Many religious folk who have problems reconciling their religious dogma, eg. if animals have souls, how can their souls be saved if they cannot accept religion? eg. Jesus Christ as their savior, take the easy way out to say "Simple! Animals don't have souls! Problem solved!" are lying to themselves with cognitive dissonance when they observe individualistic emotional and mental capabilities within animals.