Ashley Tisdale Tries to Go In-Dog-Nito

12/1/2007 10:30 AM PST BY TMZ STAFF
There's nothing quite like using your own pet as a mask.

Ashley Tisdale demonstrated the technique yesterday, trying desperately to hide her unmade-up -- and yet perfectly lovely -- face at JFK airport in New York.

Despite her -- and Fido's -- best efforts, she couldn't shake the hysterical attention of a mad, mad fan. Okay, let's just say it -- that mad, mad fan.