Who Knew Dogs Could Tell Time?

On days that I work, Abby has a professional dog walker/sitter that takes her out  once or twice during the day.  She's a retired postal carrier and loves walking Abby and a couple other dogs each work day.  Abby just LOVES her, and will wait patiently for her to show up at the back door.  But she also waits patiently on the days I telework each month, thinking she'll get another visit from