The Animal Rescue League of Boston is offering $5,000 for the tip that leads authorities to the person who tortured a young pit bull and left it for dead in a Quincy park last month.

The agency said today the story of “Puppy Doe” has captivated people around the country. The one-to-two-year old female was unable to walk when a Samaritan found her in a Quincy park Aug. 31. She was euthanized that day, and a necropsy showed she endured a sickening routine of torture, having had her limbs pulled apart in addition to being beaten, stabbed and burned. The dog weighed 18 pounds — less than half what a healthy dog of her size should have weighed.

“We have been deeply moved by the outpouring of support from people all over the U.S. , looking to help us identify who inflicted such pain and suffering on Puppy Doe,” said Mary Nee, president of the ARL.

The agency, along with Quincy cops, have received hundreds of phone calls about the case, and the ARL said today it has collected more than $2,500 in donations from people who want to see cops catch the pup’s tormentor.

Donations are being accepted at arlboston.kintera.org/puppydoe

Authorities urge people with information on the case to contact the Animal Rescue League at (617) 226-5610 or email cruelty@arlboston.org; or contact Quincy police Det. Thomas Pepdjonovich at (617) 745-5774.