Jennifer Aniston and Owen Wilson had to be extra cautious while filming new movie MARLEY + Me - because their canine co-star wreaked havoc on set.
The pair star alongside four-year-old American Labrador retriever Clyde in the film - and the animal's trainer Mathilde De Cagny admits the dog caused chaos during the shoot.
She tells U.S. magazine OK!, "One time he was supposed to grab some pillows, and Owen comes in wanting to grab him, and Clyde whacked him in the face with the pillow.
"We also had a day when I got reprimanded: Clyde was in a scene with Owen and Jen, and he peed on Owen's leg."