Okay, I have a question.

I am not quite sure what to call this. When dogs get extra excited, or something else to provoke this reaction, and they run around faster than they usually can (or will) and sometimes do weird little tricks. With my parents Little Dog, it looks like she tucks her butt under her and goes FWOOM! across the house. Most of the dogs that I've seen do it usually go about in circles or run up and down really fast.

I think it is adorable and hilarious. What is it called?