Adrian Grenier Says Goodbye to Entourage and His Costar, Arnold
07/08/2011 AT 02:45 PM EDT
Adrian Grenier has shared photos from his last days on set, including a shot with his canine costar, Rocky, who played the Entourage crew's beloved Rottweiler, Arnold.
"Saying my goodbyes to 'Arnold' (Rocky) and thanking him for 8 great years of loyal service!" he wrote on Facebook.
"I think he knows Entourage is coming to an end – dogs always know," Grenier added. "(And I kinda look like a dog in this too. Ruff Ruff.)"