Apparently female mice can distinguish between inbred and outbred
males and prefer the outbred ones for mating purposes.
http://www.cellpress.com/
(Read the Press Release (MIcrosoft word do***ent) link under the
following:
"Current Biology=92s new article about how mice can detect other inbred
mice through scent published today and is starting to see coverage"
Whether this means the mice are smarter than humans remains to be
seen.