It is roughly 17-18 inches long and has a base of, true story bro, old strips of t-shirt fabric. the yarn I used was lions den yarn, and yes, I like the little bit of waviness that came from not straitening it.
The knots are covered by what basically looks like a 'bandage' of sorts
This took a day and a half.
NOTE: I did this without any clue how to make a yarn tail. I didn't have any tutorials to look at, only pictures of tails WIP.