To make life easier for others here are the links;
http://starwars.wikia.com/wiki/Anomid)
http://starwars.wikia.com/wiki/Muun)
http://starwars.wikia.com/wiki/Kaleesh)
http://starwars.wikia.com/wiki/Yubookoo) is not a species... its a wookie?
Interestingly as Gsccc, pointed out to me in another thread; while heads with moving parts would still be impossible something like the Anomid; may well be possible, especially if you got a talented moddeler to model a mask, instead of head. Just my 2 cents.
Very true, seeing as the Anomid has a mask on and that it has no inner eye detail, it should be possible to make that a species. However there seems to be a bit of conflict with the others, especially that last one as Jonathan pointed out.
Also, thank you jonathan7 for posting those pictures, it makes it much easier to make a decision on things like this, when you actually know what the species look like :).
- Doc