The case for animal emotion, and my chicken thinks I'm beautiful.

There, someone went and said it. "It's bad biology to argue against the existence of animal emotions." Dr. Mark Bekoff, University of Colorado professor.

Magpies hold funerals for fallen feathered friends

http://www.theregister.co.uk/2009/10/21/magpie_funerals/

Cows bear grudges: official

http://www.theregister.co.uk/2005/03/04/cows_bear_grudges/

and finally animals have preference for beautiful, smiley people:

Sheep like happy, smiley people: official

http://www.theregister.co.uk/2004/06/14/happy_sheep/

Chickens:

Chickens prefer beautiful humans. Stefano Ghirlanda, Liselotte Jansson, and Magnus Enquist. Human Nature, Vol. 13, No. 3, pp. 383-389.

Chickens trained to peck a computer screen preferred faces rated as beautiful to humans. Cocks were trained to peck female faces, and hens were trained to peck male faces. The chickens preferred the same faces that human choose as preferred.