Enkidukai have feline qualities, but they are not cats, just like humans are not apes. I find this an amusing topic, but I've given you answers and I'm going to refrain from repeating myself 
we [the player/contributor community] have little information. there for we must do our best to compensate. as i said, show me an Ekien x-ray, then this topic will be settled.
we [the player/contributor community] need information, not summorys. put out a settings encyclopedia. until then all sorts of useless speculation will go on and result in more "amusing" topics. sorry if i come off blunt or offensive. I'm stressed out right now. and a tiny bit angry i still can not get other information from settings. not that it is their fault, i might not be trying hard enough.
i will admit i am not the "normal" player and probably am requesting to have accsess to far more information then the "normal" player. to tell you the trueth i am probably over stepping my bounderys. i want to be able to create in this world the PS team has provided, not just observe and interact with what is already there. i want to know "Why", not just that some thing dose. i want to add, not just take. but i do not think i, nor anyone, can if we don't know enough about the PS world as it is already.
@Draklar: i am pretty sure "it don't bend like that" or if it dose, it ain't doing so comfortably. i mean, you try bending your spine against a hard service for possably hours on end and see if you don't get a few pangs here and there. a tail is not stiff, but it is not pice of string eaither. your cat siting on a chair that is at least 4 times as big as him, dose not a good example make.
wow, long post, i feel better now. i think i'll go to sleep.