You see: A cute kid with her Dad saying hello to a doggie and playing ball with him
You see: A hygiene crime
Dog Owner sees: Practicality
Why: Dog Owner has taken Dog for a long walk. All the water fountains are too high for dog and dont have sprays that are strong enough to go over the fountain and reach the floor. Therefore, Dog Owner has to buy a bottle of water at the pharmacy and share it with Dog. Dog Owner loves Dog, sees Dog panting and so lets Dog drink first. Dog Owner pours water into their palm and Dog laps it. Dog's tongue may touch the rim of the bottle. Dog Owner is thirsty too and figures that, hell, this aint that different from when I let Dog kiss me, so wipes off the edge of the water bottle and has a drink themselves. It's just more practical that way.
You see: Two dogs sniffing each other and then starting to growl and bark... how cute!
Dog Owner sees: Dead Dog
Why: Dog Owner knows that it is impossible to predict how two dogs will react to each other. Both may be docile and friendly yet not with each other. They may be friends, have play dates, but just have a problem with each other that particular day. Any inkling of things getting out of control is scary - very scary.
You see: A tennis court in the park with people playing on a nice summer's day
Dog Owner sees: A test of dog training
Why: For Dog, tennis ball has one function only: prey. The fact that humans are hitting them around is just a bonus - prey with game. Getting Dog to walk past tennis court without going completely insane is going to be very difficult. Dog Owner instantly regrets not having spent more time training Dog.
You see: Kids playing frisbee in the park
Dog Owner sees: A test of dog training + potential law suit.
Why: At least a tennis court has a fence around it.