80's Dragon in NYC

[Pacman000]

I found this post on StompTokoyo's Movie Search forum:

I kind of remember this film I saw when I was a kid it envoled a dark blue/black dragon that learnt to talk by listening to people in the underground, a scientist comes looking for him with some army guys. But he joins a street smart kid (I think called zack)

We might be able to help as well.  I've already looked through IMDb's list of dragon films from 1900-1990 with no luck.  Any ideas?

I must admit the plot sounds interesting...

[Jim H]

I'm now interested too.  Fair change it isn't a dragon, just a creature that LOOKS sort of like one and he is misremembering.  Maybe a mutated alligator since it's underground in New York?  Do we know that it's live action?

[Pacman000]

Don't know if it's live action.  Asked but got no answer.  Since the post was made months before I joined that forum I fear the poster left when he failed to get a quick response.