I just got a new puppy and she is so cute.can she help me lose 20 pounds before the school year starts?or a little after the school year starts.im 12 and i eat healthy.how long should i walk my puppy?what Other activities should I do?

Indirectly she may be able to help you. Taking her for walks (not more than 15 minutes to start with) will help you and the pup. Training and playing may take your mind off food and on to the puppy. Good Luck.