Pamela Anderson had a somewhat rough time filming Superhero Movie, E! News Online reports. Apparently, she wasn’t too pleased when she found out she had a scene with a dog in the flick.

Sources say she refused to act opposite the canine because PETA doesn’t support using real animals in moviemaking. “Pam left the set and went for a walk,” a source reports. “She needed a time out. She was that upset.”

In the scene, Anderson’s Invisible Girl superhero character calls for her Invisible Dog. The four-legged friend becomes visible just as it jumps into her arms.

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