This is so cool - from the Baltimore Sun:
Calvert dog said to perform Heimlich maneuver
Debbie Parkhurst, 45, of Calvert told the Cecil Whig she was eating an apple at her home Friday when a piece lodged in her throat. She attempted to perform the Heimlich maneuver on herself but it didn't work. After she began beating on her chest, she said Toby noticed and got involved.
That's when the apple dislodged and Toby started licking her face to keep her from passing out, she said.
"I literally have pawprint-shaped bruises on my chest. I'm still a little hoarse, but otherwise, I'm OK," Parkhurst said.
"The doctor said I probably wouldn't be here without Toby," said Parkhurst, a jewelry artist. "I keep looking at him and saying, 'You're amazing.'"