Difficulty: Moderately Easy
Step1
Discuss maintenance. The last thing any busy parent wants is another chore. Talk to your parents about what it takes to maintain a gerbil. Convince them, beyond a shadow of a doubt, that you will take proper care of your new pet.
Step2
Talk to them about cost. Your parents may not want to incur any additional expense. Tell them what gerbils and their maintenance cost. Let them know that you're willing to use your own allowance money to buy and maintain the gerbil. You might stand a better chance of getting one.
Step3
Convince your parents that gerbils are quiet. Frazzled parents love their peace and quiet. If your gerbil will be running around in a squeaky exercise wheel, that might just put the kibosh on your plan.
Step4
Figure out the poop factor. All animals must eat; therefore, they all must poop. Discuss this with your parents. Discuss how much the gerbil will poop and how eager you are to clean it up to keep the cage looking and smelling clean.
Step5
Bargain with your parents. Tell them (and actually mean it) that if they allow you to get a gerbil, that you will clean your room, get straight A's in school, wash the clothes, shampoo the rug, cut the grass, shovel the snow, mop the floors, be nice to your little sister, wash the dishes ... you get the idea.