Many (not all) dog owners are disgusting humans who bring their excrement-machines outdoors and soil my neighbourhood sidewalks. But it gets worse. Well, not worse exactly, just equally assholish.
A lady in Westmount Park today (see below) groomed her dog and let the (probably smelly) dog hair fall on the grass beside her and blow in the wind. The light coloured areas in the grass around her is dog hair. That's class!