"It was freezing on set all the time, just 30 degrees [Fahrenheit] - I was dying but the penguins were very happy. Then we'd go outside and do a scene on the roof where it was 80 degrees and I had to be in a Parka and five layers of clothing," he said.
"I literally almost fainted at one point. I was like, 'Get it off' and they had to tear the coat off me. And all they want is fish, so I carried fish around with me - in my pockets, shoes, everywhere. My life is very hard..." he added.
"Some people resist working with children and animals for fear of being upstaged," said the 49-year-old.
"But I love capturing the spark of innocence. And what's better than penguins, in our case, and children to bring that out in us? I liked working with them because it was always spontaneous; you never knew what was going to happen."
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