Rat, for example (6)
I believe the answer is:
rodent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rat for example</span>' is the definition.<br/ ><span class="explanation-format__explanation">(rat is a kind of rodent)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rodent that I've seen before include "Vermin" , "Nibbler" , "Eg, capybara" , "Mouse or squirrel, say" , "Mouse, squirrel or rat" .)