Is Smokey In This Picture?

I've started rewatching LOST from Season 1 and the good
news is that I'll have to watch more than 1 episode a week
to watch it all before Season 4 starts.

The question for today is what's the deal with Vincent?
Did he land in the jungle, manage to spring his crate and
then go looking for food and water on his own? Or did
something else happen? Is Vincent really a live yellow
lab or is he Smokey or some other Island manifestation?
Is Vincent the mole in our LOSTies camp?