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How to pick a healthy gerbil that suits you
Observe the gerbils for a while.
Which seem active? Which seem happy? Look closely at the animals and see if they are generally perky.
Look for any symptoms.
Are their eyes open and bright? Make sure none of the gerbils have wounds, these are usually indicators of a past fight. Their coats shiny and well kept? A rough coat is usually a sign of illness.