On my web pages, I have examples of the environments, I've set up.
Starting with journal page 7 continuing on to page 11.
http://www.geocities.com/Heartland/Estates/4185/journal7.html
Their favorite set ups, are those with many hiding places or levels.
However, The biggest drawback is when housing multiple gerbils. This
stimulated environment increases the chances of territority disputes.
Even a simple box adding a single level can cause a dispute/fight.
See--
http://www.geocities.com/Heartland/Estates/4185/j4.htm
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Gary's web pages -
http://home.talkcity.com/StudioDr/go5
