If you want to aid abused, neglected, or homeless dogs too, one of the best things you can do is help your local animal shelter. Support nonprofit fundraisers that provide much-needed money to these organizations, which they use to house, feed, and cure the animals they harbor. You can also start a dog-walking service or sell hand-made crafts, then donate the proceeds to your animal shelter.
EBay also has an online nonprofit fundraiser program called Giving Works. Through it, you can sell pre-owned belongings and donate 10-100% of your sales to the Humane Society of the United States, a nonprofit that campaigns for animal rights and conducts animal rescue.