I answered "what kind of wolves are they" and it wasn't accepted. is it wrong, really?
I suspect the key difference here is that "What are wolves like?" is asking about broad features of wolves, whereas "What kind of wolves are they?" is asking what specific sub-type of wolf they are, within the greater thing that is wolves. You're asking for a different type/level of detail or information.
How would you ask the question "What are wolves?" in Czech? As in, what are they at all, I have never heard of one?
If you mean how we would ask if wolves are animals or something else, then i would ask "Co jsou vlci zač?"
That is not correct English.
You could ask "How are the wolves?" if you want to ask if they are OK or if they are happy, but that is something completely different.
What is the difference between what are they like and how are they like?