[header] How to make your gerbil happy [title] Consider getting two same sex gerbils and not just one. [step] Gerbils are very social creatures and like to live with other gerbils. When first buying your gerbil you should consider getting more than one. 
This will keep your gerbil much happier. However, if you already have a gerbil (s) and introduce a new one, it is likely that they will fight.