My yorkie is neutered.
Some times, he gets so excited to see us,...we uhh...see a bit of him.
And just about one month ago, my yorkie got REALLY excited to see another dog named "Bailey". That was the first time I saw my boy show off his "moves"!!!
But he wasn't going at Bailey from the back...but rather...from the front.
I was embarrased to say the least.
BUT there must have been something in the air...or something w/ Bailey...because he (Bailey) was attracting at least 2 - 3 more dogs to show him their "moves".
I must say though...it is kinda funny when they fall over on the ground, and their hips are still moving.