Can babies learn two languages?

Yeah, babies can learn more than two languages and it is very common in India. Parents of two different states knows more than two languages so that their children too learn very quickly.

As long as it is under an adult supervision, a child can start learning a second language at an early stage. When they are able to speak them they will not mix. I know of a six year old girl who speaks English, Portuguese and Russian, perfectly as well as she writes and reads Portuguese and English quite well, considering the age.

Children can learn language from as young as a few months old.... They can become bilingual, learning 2 languages from as early as this time.

based of my experiences with my grandchildren (kids of my nephew and nieces) my answer is absolutely yes they learn 2 languages with no one teach them but by using laptop with internet (google and watching youtube)

Hey. Of course they can. But one should be aware of the stages of language acquisition. In my opinion, as soon as the child gets a gist of what language, regardless of what language, essentially is, they can start learning the second language. And that may be as early as five years old or so.