What Breed Is My Dog?

My dog is a yellow Labrador mix. Her mother was a pure yellow Lab. She just turned eight months. She is as tall as my other dog, a 3 year old pure black Lab, but the pure Lab is chubby and she is very thin. When it comes to her fur, she has gold almost orange parts and she has almost white parts, those are her only colours. She has ears shorter than a pure Lab and she has honey colour eyes. I haven't taken her to the beach yet, but she seems to hate water, I think, but maybe she is just afraid. I've thought about Lab/Border Collie or Lab/German Shepherd since she has a long nose. But she is definitely half yellow Lab, that I know for sure.