The image is small because the original was really crummy (it's a cell-phone image, I might try taking a better one later on).

They're both female dogs.
The black one at the top is Lacey. She's pretty energetic (she jumps really high when we get ready to take her outside) and smart. She might be part Border Collie but we're not sure.
The tan one at the bottom is Cagney. She's a lot more mellow but a fair bit bigger than Lacey.

We think they might be sisters, and they're both absolute sweethearts.