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 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.