Well I have given it some thought, I have several designs, most based on the parts that I have observed in youtube movies and interview screenshots, not to mention read about, a some very few designs based on speculation. I shall describe one of my creatures here, at least certain aspects about it (not saying this is the creature that I want to evolve).

The Ankleglorsher:
A snake like body, although it has 3 pairs of small stubby legs, but the feet are light which makes this creature slightly fast, it has a rather large head with a carnivorous mouth that resembles the one of a piranha, it has 4 very basic eyes, all of them completely black. The creature is about the size of small kitten in height when on all 6 legs, but standing on just 2 legs it can be the size of a short human (reaching about 1,40m) which it's size in length, when standing on all 6 legs. It usually hunts in tall grass areas, where it feeds on young or small herbivores or even some infant carnivores, although it prefers preys that wont bite back. It's weaknesses are probably the mothers of infant carnivores that it attempts to hunt, these are usually equipped with teeth and other weaponry; it also has poor vision, although it has 4 eyes all of them are very primitive and it requires to be very close to it's prey in order to have a successful hunt. It is a creature that has a balance between stealth and bite power, however it is neither the stealthiest or the strongest.

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