Dog born with only two legs

(CNN) - Little Roo has a lot of fight in her. She is only 6 weeks old, but has already had a rough life.

Her owner abandoned her, she's been sick and in the hospital, and she was born with only two legs.

Roo was started to learn how to get around using her back two legs. The Arizona Humane Society hopes to fit her with a device that will help her get around.

The Humane Society Second Chance Animal Hospital hopes to have the device in the next few weeks. The hospital relies on donations to help stray animals like Roo with medical costs and food whether the animals are dealing with unexpected problems or ones they are born with.