Wom, can you clonk the neighbors on their heads with a newspaper for me when they return? Seriously though, how sad of them to leave their dogs un-cared for. You get a huge gold star for looking after them as you have.

And I'm with pitc9 - give them a bill for the food and care you provided their dogs while they've been away. I called my sitter to see what she charges for visits to dogs and her fees are $18-$20 per visit. She said each visit is supposed to take 30 to 45 minutes.