This video was posted to YouTube with the title, "Crying Rottweiler Grieves For Dead Brother. Animals Do Have Emotions."
According to the uploader, the little guy in this video woke up to discover that his twin, Hank, had died overnight.
Brutus does not want to leave him and will not budge, laying on top of his head. Brutus has never whined or cried out in pain the two years I have had him…But clearly you can see in his eyes, he is crying for his brother who had passed as his world around him just crumbled. We both grieve and cry for our brother…This is proof that animals DO have emotions and feel pain just like we do.
[via Reddit]
