[aruanan]

Dog owners, who have noticed that their four-legged friend seem equally delighted to see them after five minutes away as five hours, may wonder if animals can tell when time passes.

My friend's dog Rex, who would wildly bark at strangers passing the front door or walking into the vestibule of the 3 story walk-up, would remember the sound of my walk upon entering the first door and know that I was part of the family even years after last seeing him and be dancing around waiting for me to come through the second door.

[MiltonFriedmanFan]

I know this is simply not true. My old dog used to crawl on the bed looking out the window every day between 4 and 5 waiting for my mom to get home. When my dad was gone for a week and picked him up and brought him home, my dog was outside and ran up to my side of the door waiting for me to get out. But when he saw my dad, he began jumping up and down and running around the car nonstop.