Ariel (Mixed Breed)

Ariel is 11 week old mixed breed dog. I'm unsure what breed she is, I've been told she is a crossbred mongrel and Collie. I got her on the 30th of January. A social worker rescued them from a house and took them in. There was no dog homes available to take them so she gave them away to people she knew would want them. She starts running up and down across my corridor out of the blue, it's real funny and very cute.