Mickey Rourke touched a lot of hearts when he thanked his dogs – "the ones who are here and the ones who aren't here anymore" – at the Golden Globes, and sadly, Loki now falls into the latter category. I was really hoping he'd bring this 18-year-old pup as his date to the Oscars on Sunday (as he mentioned last month), but his rep confirmed yesterday to E! News that the Chihuahua passed away on Monday night.

Anyone who's lost a pet knows how difficult this is, and even when it's a stranger in the public eye, it's hard not to empathize as well. I'm saddened to share this news with you and gathered the most recent photos of the duo that I could find, leaving lunch with designer Domenico Vacca at NYC's Nello restaurant on Feb. 12 – RIP, little Loki.