Reports are Justin Bieber's pet hamster has died. Beliebers everywhere are mourning the loss of Pac, the hamster that Bieber gave to screaming fan Tori McLure at the Atlanta Jingle Ball show last December -- simply telling her, "You gotta take care of him." "They say PAC probably won't make it much longer. He's like an old man. My feelings couldn't be more hurt ):," McLure tweeted on Tuesday night, adding, "But they also said 'on the bright side he got to live a healthy lavish life of a popstar, not many hamsters coulda been the Biebs' #feelings." Pac's owner also posted the hamster's last photo and wrote, "I just wish he could get better. One final picture! He was OUR baby & @justinbieber I still can't thank u enough," adding, "He will be one of my sweetest memories! Thank u @justinbieber so much again. He will always be OUR boy." Bieber first introduced Pac to the world when he posted a photo