There's an awful joke based on the myth that blind people possess four heightened senses to make up for their fifth missing one. I'm not going to be the one to make it, though.
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Blind couple, home association battling over guide dog droppings [1]
INDIO, Calif. (AP) - Dennis and Shirley Bartlett know about their Desert Grove homeowner association pooper-scooper rules, but sometimes they simply miss the droppings left by their dogs Nebraska and Marna.

Residents have been complaining and the association president mentioned it to the Bartletts. Now, the blind couple is headed to court to resolve the disputed droppings left in the street by the guide dogs.

"Sometimes you will miss little pieces just because (the dog moves)," Dennis Bartlett said. "You can't get everything all the time." More... [2]