Difference between rare dragon and it's recolored counterpart

[Zetra]

I just figure it out,if you look closely at some epic super rare dragon you can notice some difference other than color or size,Like:
Parakeet:Smooth Wing,Only one horn in heads back.Eagle:Scale covered wing,two horns back.
Still working on super rares,post if you found another difference.

[LUCASYAU]

The Mistmoth has different patterns on its wings than the Fairy dragon.
The level 4-6 Forestfire Dragon Already grew legs the Mindvolt has not. ( Which is strange, because if you attempt to sell a lvl 4-6 Mindvolt, the Sell confirmation pop-up shows the Mindvolt with legs)
Athletic has a differently shaped head compared to its Prankster counterpart

[Zetra]

Nice to know that,and Forestfire's neck pattern and Mindvolt's have difference,the wing have difference too!(which is rather obvious)That proves TL does not that Lazy after all.