Step 1: Show your parents you are responsible.
This is a good way of telling them you are ready for a dog and that you are going to take care of it. Just tidy your room and do chores around the house.
Step 2: Save up money
Save up enough to pay for at least 1/4 of the amount of money (unless the dog is free!)
Step 3: Don't beg!
Begging for a dog will just make them say no even more! If they say yes and there is a specific type of dog you want and they say they will think it over and get a different type of dog it will be better to let them think it over and get a different type of dog than annoying them for a specific type of dog and they say no.
Step 4: Show them pictures of cute dogs!
This is a good way to make them say yes! So find really cute puppy/dog pictures, It might melt them!
Step 5: Don't always talk about it.
Ask them one day then wait for about 2 weeks then ask them again.
Step 6: Tell them why you want a dog.
Make or right a heart-felt speech of why you want a dog, It could be because you have nobody to play with at home, Or because you want to take care of him for life. Telling them this will probobly impress them and they might just think about getting you dog/puppy!
Step 7: Collect information about the dog you want.
Try to find a dog that's just right for you! Try to find one that doesn't shed because that might put yor parents off getting one.