Dogs know when will you come home

[Dee Ding]

Dogs know how long have you been gone fro your home that is why the longer you were out the more excited they get. And they can even estimate when will you be back. Its all because of their strong sense of smell. As time goes by your smell around the house fades that gives them clue that you've been gone for a while and its almost time  that you come back. 

[StefiBGud]

This is really true indeed. I have an example about this,but this time it involves a cat. Some time ago i had a cat named Victor and my little brother liked to play with her but it was a big problem: the cat left hair in his hands. So,one day my parents decided to ged rid of her. My dad took her to the edge of the forest and left her there. 2-3 days after this she showed at my door. This is an example that the animals are smarter then we think they are.