Quarantined Lab                                        -      -      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S      -

This room contains some overturned cages and various containers that
appear to have been thrown violently against the walls.  The occasional rat
scurries about, however they avoid you in fear.  You wonder what sort of
dreadful experiments are being conducted in this lab.  
A long suffering, rather abused looking lab rat is attacking anything that moves.
A lab rat begins attacking you!
A lab rat is in perfect health.