I would sit and watch Princess when she wanted to play with the neighbors dog so bad and couldnt. She'd actually throw what I called a fit. She'd grab a stick or something and fling it then go lay down and whine. It looked like a child who didnt get their way, throws a toy down then stomps off to their room to cry. It's not just dogs either. You ever see a squirel that was hit by a car and its little one or mate sitting by it's dead body like it's griefing? Thats so sad. I seen a momma possum dead by the road and it's baby sitting by the body like it was lost. There is a place in WI that takes in lions and tigers. I was reading that when one dies the others cry very loudly. It was very interesting. We dont need any scientific studies to tell us if a dog has emotions. We could save them alot of time and money just by writing out the things we've seen through our lives to prove they do show emotions.