Robert Pattinson didn’t realise he had a big part in Water For Elephants

Robert Pattinson didn’t realise exactly how big his role in Water For Elephants was when he signed up.

The Twilight actor plays vet Jacob Jankowski in the flick, which also stars Reese Witherspoon.

“When I first read the script — because I didn’t have that many lines — I just thought, ‘Oh OK I get it. I’m like the eyes of the audience,” he said.

“It’s going to be a big spectacle movie that isn’t solely resting on my shoulders…’ So I was very relaxed about it, going in.”

“I only realized about halfway through. I was working every single day. Reese was hardly ever in and Christoph [Waltz] only came in sporadically. I was like, ‘How did this happen?’ ”