Do non-human animals have self awareness?
I presume you're asking about animals on Earth. Otherwise I'd be inclined to answer "Almost certainly!" given the vastness of the universe and the mind-boggling number of planets that astronomers estimate are out there.
You've asked a question that's at least partly empirical, so as a philosopher I'm not especially well-equipped to answer it. But some who are better-equipped have answered "yes": see this link.