Mu isamaa, mu õnn ja rõõm.

Reading the books of Dora the Explorer to Shachar, I encountered this lovable character named "Isa the Iguana". Since Dora's cartoons and books are popular all over the world, it makes me wonder - what's it called in Estonia? I mean, this Isa lady in particular. If they haven't changed its name, kids would be quite confused. "Isa" means "father".