I read somewhere that this is possible if all the vaccinations are up to date and the dog has been given a clear bill of health from a vet?

Does anyone have any experience or knowledge about this?

Taken into Cambodia for what purpose? On holiday and going to return to Thailand or establishing a new home or...?

If you plan to return to Thailand, you may want to explore that eventuality as well.

Pet Passport Cambodia

Regulations for taking a pet dog or cat to Cambodia

Cambodia does not quarantine healthy pets who meet the following requirements:

• Your dog or cat must be vaccinated for rabies and various other diseases between 30 days and 12 months of entry. Then the Veterinary Certificate for Cambodia must be completed shortly prior to travel. Although it is not required, we recommend that a USDA or CFIA licensed veterinarian complete the form and you have it endorsed by the USDA or CFIA if traveling from the United States or Canada. If you are not traveling from either of these countries, the Governing Authority of your country responsible for the import and export of animals should endorse the forms.
• A copy of the Rabies Certificate should also be included for endorsement.
• A copy of the owner's passport and a photo of the pet should also accompany your pet.

This completes a passport for your dog, cat or ferret to enter Cambodia.

http://www.pettravel.com/immigration/cambodia.cfm

One of the questions we hear from expats is whether or not it’s possible to bring their pets in and out of Cambodia. Happily, the answer is a resounding yes! We talked an expert on the matter,Nicola Scales, the president and founder of PPAWS, the Phnom Penh Animal Welfare Society about moving with pets to Cambodia and adopting pets in Cambodia. Here’s the low-down

http://www.movetocambodia.com/expat-life/pets-in-cambodia-how-to-import-a-dog-or-cat-or-adopt-one-here/

Make sure the pooch has a collar and tag, and don't let it out of your sight! ;-)

Make sure the pooch has a collar and tag, and don't let it out of your sight! ;-)

Or it may end up Dog in a Basket with salad.

Actually it is likely that a collar and tag will make the dog more of a target. Pets are much easier to catch than streetwise street dogs.