Four tattoos
Bruno Mars has four tattoos, a gypsy on his left forearm, an anchor on his right forearm, his mother's name on his right shoulder, and on his left bicep is "Pete's boy" ("Peter's boy", Peter is his father's name), above a knife, symbolizing courage and safety.
Bruno Mars' first dog
The first dog Bruno Mars bought in 2012 was called Geronimo.
https://www.instagram.com/p/yBLRh2u8w7/?taken-by=brunomars
Bruno Mars as a dubbing artist
Mars lent his voice to the blue bird "Roberto" in the English-language version of the film "Rio 2".