HOUSTON - Texas Children's Hospital four-legged employee celebrated her second birthday with patients and friends.

On Thursday, Elsa wore a tutu, party hat and birthday bandana for her soiree. She spent time greeting patients and guests, playing with her new toys and enjoyed a dog-friendly birthday cake from Three Brothers Bakery.

Elsa became a full-time employee last October. She and her handler collaborate with medical teams and therapists to provide support to patients who may be having trouble coping with hospital stays or a new diagnosis.

Photos: TCH therapy dog celebrates her birthday with patients