Sitting on a tail

I've noticed that hyenas use to sit on their tails quite often and I find it so cute and funny xD (I have no idea why they do that though)
And because I really like to draw pictures about tails (not a surprise, I guess xD), I worked with this fact and made... this.
Sam (brown) is quite annoyed by Nirrah sitting on her tail xD she just likes Nirrah's tail and she doesn't want Nirrah to do with it things just like sitting on it (but, like, I don't say Sam doesn't sometimes sit on her own tail! ... or ... on Nirrah's tail).