Interesting. It *appears* that dogs console others as well...but no mention in the article.

Quoted: Dr. Frans de Waal argues that human morality would be impossible without certain emotional building blocks that are clearly at work in chimp and monkey societies.
...
To console another, Dr. de Waal argues, requires empathy and a level of self-awareness that only apes and humans seem to possess. And consideration of empathy quickly led him to explore the conditions for morality.