While mountain lions have been confirmed as rare stragglers in many
midwestern states, including Illinois, and are apparantly a liitle more
likely to be seen in Nebraska. There are at least three confirmed reports
and quite a few unconfirmed reports of them in Iowa; it seems unlikely you
would have any consistently regular sightings in Iowa.
See
http://www.iowadnr.com/news/04jan/lion.html
for details.
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