(*゚0゚;;)

                     ∧ ∧
                      (*゚0゚;;)
    ∧∧               (|  |)
   (*゚0゚;;)─~       .   ~|  |
    し-J─J              し´J

The AA "(*゚0゚;;)" was originally used to represent the expression of a Shii that was in pain. However, (*゚0゚;;) eventually became established as its own separate character.

It started with a thread called "I want to keep (*゚0゚;;)..." about an (*゚0゚;;) that was kept as a pet. It was established that (*゚0゚;;) have low intelligence and a short lifespan.

Sources: