Dogs And Money… Can U Help ?

Erm im saving up to buy myself a puppy.. Does anyone know a way i can earn money? And im 14 by the way and have my moms concent to get a dog but she says i must save myself lol
Also which is the best breed to have?
A papillon http://creaturecomforters.net/catalog/images/papillon.jpg
A yorkshire terrier http://www.dogcastradio.com/images/YorkshireTerrier.jpg
A chihuahua http://www.breederretriever.com/photopost/data/508/chihuahua.jpg
or
A pomeranian http://www.kennels.co.uk/images/T.Pomeranian.jpg
Which are the best with kids, cleanin, training etc and other things.
Thanks every1 xxx