What to do with a choking dog?

[RB Will]

Had a bit of a scare yesterday. We were all in the kitchen at lunchtime and eating. The dog was munching through her kibble as normal then stopped and started making some horrible noises. I jumped up but had no idea what to do. She managed to cough it up herself after about 5 seconds. i guess she just swallowed the wrong way.

What do you do with a choking dog though?
Do you give them a slap on the back, stick your finger down their throat, heimlich?

[RB Will]

She eats from the floor. First time this has happened in 6 months of owning her though.