Silly question but how why do dogs cry when your gone?

Answer 1

https://www.google.com/search?source=hp&ei=O2D_W7D6OtGWsAWk-Z2wDg&q=do+dogs+cry&btnK=Google+Search&oq=do+dogs+cry&gs_l=psy-ab.3.3.0l10.3788.3788..7117...0.0..0.133.239.0j2......0....1j2..gws-wiz.....0.KXj7JMMudzs

Answer 2

Probably the same reason humans do – they miss you.