Lucky is the alpha dog at Shelter 17. He is a mostly calm, laid-back dog who is usually kind to other dogs, especially puppies. Although he is kind, he is also firm in his orders, which the team typically obeys without question. He has the final say in all matters at Shelter 17. Lucky is voiced by Eric McCormack.
Throughout the series, it has been hinted that Lucky and Cookie have secret crushes on one another. Neither side has professed this love to the other though, and both remain oblivious to the other's feelings.