bearded dragon - looks like one a friend had that I had to sit for - and I am not sure to which movie you are referring

Night of the Iguana by Tennessee Williams?

Well, it might be a bearded dragon (certainly not Komodo), but it's still a fucking iguana. The other thing it reminds me of is...

I think his trainin' is draggin'

dragons go by train.

Puff rode on the train.

that will train your dragon

It finally decided to move, but she was seriously late for work. She thought they'd accuse her of making it up, but she explained anyway and the principal just said, "yeah, we all have that happen."

Between gators, pigs, and chickens, she was late a few times.

Over a football field's length - was probably related to Tim Tebow