Is she a Lab/Collie cross?

We are thinking lab/pitbull (extra wide jaw in back, short hair for a lab, little undercoat, brindle stripes under topcoat), but without a DNA test, it's anybodies guess.

She has the markings of a collie. Showed picture to my wife and she thought the same as I did. Must say we are not experts.

Wouldn't a collie make the hair longer? She has short hair, even for a lab. It's more the length of a boxer, dalmation, or pit.

Your probably right though our black lab Masie, she is 14 in March, has got a short coat. As your say without a DNA test one can never be accurate. So very pleased you went and got her to give her a good loving home. She seems to have settled herself in very well judging from all the photos you have taken of her.

She is turning out to be an exceptionally good dog. The folks who were going to "throw her away in the desert" had no idea what a good dog she is!!

That's very good to read. Tough luck on the folks who were prepared to dump her. We can not abide by people who would do something like that. Its always nice to know there are people like yourselves prepared to step in.
Our other dog we got as a puppy from the local Dogs Trust. She is a German shepherd cross border/rough collie. She is 6 this year and a fantastic dog. Her mother a German shepherd was pregnant when she arrived at the Trust, and she gave birth to 3 pups though only 2 survived, of Summer was 1 of them. Pleased to say all found new homes.