Hi !
Answer:
<em>- Paranoid Personality Disorder</em>
They are similar to animals because they can move and they are heterotrophs (heterotrophs are organisms that cannot manufacture their own food and instead get their food and energy by taking it from organic substances like plant matter).
There were more but they weren't discovered as they were not viral and treatment was unknown and research were not done.
Skeleton muscles relay on contractions to move the bone they are attached to so it can contract and relax