Under inspelningen av Water For Elephants så tvingas Rob att arbeta med olika exotiska djur, där i bland ett lejon! Enligt rapporter hade ett av lejonen fäst käkarna runt Robs arm, men lyckligtvis utan tänderna. Han säger så här om händelsen:

"Almost every day I'm working with an exotic animal... It's insane, like I got bitten on the arm by a lion with no teeth. They were like, 'It's fine, he does it all the time.' And I was like, 'erm.. ok...!' But they had to get him to do it harder, because he was being so gentle and just licking my arm."

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