Zac Efron: Meet My Pooch!

They say a dog is man’s best friend, and Zac Efron took to his Twitter page to introduce his canine BFF to the world.

The “High School Musical” stud posted a picture of his pooch pal along with the caption, “I’ve got a dog named Puppy. He’s an Australian Shepherd.”

He added, "Here's the photo of Puppy I promised earlier. It's from last Christmas morning. Hilarious! Cheers & thanks again!"

It seems Zac has always loved dogs- back in 2005 he called them "crazy. They're always getting into some kind of trouble ... but then again, they're my most loyal friends."