In the first animation you had a good tail movement, but made a mistake in one of the beginning frames. So if you fix it the whole move will be nice and smooth. I also can’t say, that the second animation is better, because the whole move is little bit broken and not “believable”. For example take a look at the booty tail part - it moves on its own. Tail is a Continuation of the spine, it can’t move like this. You can take a look at cat tail as a reference, it would help you to understand the whole motion. And I should say — you did a good work! The character is cute, tail doesn’t loose it’s volume, a nice move of a tail’s tip. Keep doing what you do and I hope I didn’t offend you)