Just thought I'd reiterate a question I embedded in a previous posting:

mouse = murine
dog = canine
cow = bovine
wolf = lupine
cat = feline
rabbit = lapine
goat = caprine.....etc

So what's a rat?  

Rattine would be a logical choice but isn't particularly satisfying, and the
other replies of "someone who doesn't pay for dinner" or "someone who
doesn't buy a round" while perfectly true, are not quite what I'm after.

So come on you grammarians and scholars of the english language (or any of
those dead languages that made it what it is today) and help me out.

Simon
Simon Smith B.Sc. AIBMS
Supervisor, Laboratory Resources
Skeletech, Inc.
22002 26th Ave SE, Suite 104
Bothell   WA   98021
Voice: (425) 424 2663   Fax:  (425) 424 2600
E-mail: ssmith@skeletech.com