Creature Concept - Pytherions

I've been slowly making some concepts for a head world I've been continuously thinking about. I'm going to really try and make a solid game model out of this in the future. Pytherions, in theory will act and behave a bit like you would see in a wild cat. The hoods on their heads along with their large butterfly-like tails are also used for communication purposes.
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The male is the colored one on the far left, the female is the middle, and the little hatchling is on the right.