I had to defend my opinion against teachers or friends, that animals do have emotions (-more complex like jealousy and holding a grudge), before. I am very glad for this Yale University video. For me that means next time I just refer to the Yale studies, which also makes me sound more educated and scientifically grounded.^^
I like especially the part where the monkey starts crying out of gratitude. It made me also almost cry. ;-)
But I knew all this before deep in my heart. I just have to look at my little Frenchy (he screamed out in protest once when I pet another dog...)
I also like the heartily way of the presentation. Just take it with a pinch of salt!