Blue = Common
Green = Uncommon
Orange = Rare
Pink = Very Rare
Red = Almost non-existent, but possible (More then one tail, No tail at all)

EYES
The slit acts like a cat's eye
The spiral can get smaller to where it looks like a normal pupil
The X will change to different patterns depending on mood
And the full color changes colors depending on mood as well

TAILS
Most tails have a shark fin tip, but very rarely you can fined fully furred tails with no fins ranging from long to short.
Example of species: http://www.furaffinity.net/view/15693036/

Class Differences: http://www.furaffinity.net/view/15693118/
Paws & Claws: http://www.furaffinity.net/view/15693167/
Ears & Other Parts: http://www.furaffinity.net/view/15693252/

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TIMPEKS ARE A CLOSED SPECIES OWNED BY ME