As long as I'm posting videos in the "cute livestock/dog interaction" genre, I might as well include this one someone pointed me to on Facebook: A boxer greets a herd of cows.
Now, I've seen plenty of cows in my lifetime (well, the last few years, since I moved to this cow-ridden country) and I've seen many, many dogs, and I've even seen cows and dogs together. But I've never seen anything quite like the cow/dog interaction in this video.
It will blow your mind, melt your heart, and have you thinking of a few more clichés.
Go ahead, watch it if you haven't already. (In which case your heart is already melted and you are probably seeking medical attention right now.)
And get me that dog. I have some cows that want to meet him.