how can i get my parents to get me a guinea pig?

well how I got one was I did whateva they wanted didn't whine didn't ask for any thing for a month before Christmas and the month of Christmas. then I started to tell my parents interesting facts about how to take care of guinea pigs and how a pet can make you have more responsibility. then about 30 days before Christmas I said well mom dad if I don't get anything else for Christmas except a guinea pig I would be so grateful and the happiest person ever I started to buy books with my allowance about taking care of guinea pigs and my parents were impressed and they finally got my a guinea pig for Christmas and I told they I was grateful and I loved them so much I named him buster brown-max taylor

You should show your parents your responsible. I talked to my parents and we managed to organise a 6 month trial, and if I was responsible enough, they would buy me one! And I completed the trial, and a few days ago, they brought me my little Apollo! You can try it too!