Meet Lucy. She’s a 3-year-old, 2 1/2 pound Yorkshire Terrier, and according to the Guinness Book of World Records, she is the world’s smallest working dog.

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Someone turned Lucy into a local store in New Jersey after finding the pup homeless. Lucy’s owner, Sally Montufar, couldn’t resist keeping her after meeting her.

“She brings joy everything. She can go from being homeless to having a world record. It just shows you the potential. It’s there if you take a chance,” says Sally.

She continues saying, “She thinks she’s huge. She will go after any cat ten times her size. If she sees a rottweiler, she will run right up.”

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Lucy not only gives Sally love and friendship, but she also acts as a certified service dog, bringing happiness to children with Autism.

VIA: KSDK