This is the hilarious moment a pet dog pushed away a man's lips when he tried to demonstrate how to do mouth-to-mouth resuscitation.

The Beagle happily played along with the resident as she lay on the ground with her chest being pumped to show how CPR is performed on humans.

But the protective canine reached her limits when the man locked his lips around her mouth.

Footage shows the dog twitching and barking as she turned on her side and - like an awkward schoolboy - shot an angry look back at the aspiring paramedic.

'When I tried to blow air into the dog's mouth, she suddenly wriggled and ran away,' said the filmer.

'Normally it's humans trying to get away from a dog's slobbery mouth but this little pooch didn't want my lips anywhere near her.'

Dogs are popular pets in Thailand, and many Thais consider them to be loyal members of their family.