How can i make money from my parents?

i really want a pair of cowboy boots, but my mom says i hafta pay. im 14, so i can do pretty much anything. usually when i want something i have to pay for, i do extra chores for my parents and they pay me depending on what they think i deserve. but im tired of the normal chores i do for them, and i think they are too. any ideas for me to make a little extra money? o also, i have a dog, so i could probably do something for her.