The Romanian dubbed version of "Madagascar 3" includes voice acting for these characters. While I don't have specific details on the voice actors for each character in the Romanian version, it's likely that the film was dubbed with talented actors providing voices for the main and supporting characters.
"Madagascar 3: Friends Around the World" (also known simply as "Madagascar 3") is an animated film released in 2011. The movie features a group of animals from the Central Park Zoo, led by Alex the lion, Marty the zebra, Gloria the hippo, and Melman the giraffe, who join a traveling circus in Europe. A key character in the movie is Shorty, a flying squirrel who befriends the main characters, and there are also various animal characters including a fly who could be what you're referring to as "Musteata."