The little monster can say three words: Mum, Mama and Dad. The interesting thing is this:
I speak only English to the little monster and when we're alone together and he wants something (usually food), he uses Mum!
Mr. Wolfman speaks to the little monster entirely in his native language. When the little monster is sitting with him, but wants me, he uses Mama.
My 6 month old baby, who only knows 3 words, is bilingual.