what is defination of correct coat?
If coat on the back is like the waves,is it OK or a fault.
Please let me know

Depends on who you talk to

Read the standard re coat.

Sorry - hit the wrong key before I could finish posting - here's the standard:

The coat is a distinctive feature of the Labrador Retriever. It should be short, straight and very dense, giving a fairly hard feeling to the hand. The Labrador should have a soft, weather-resistant undercoat that provides protection from water, cold and all types of ground cover A slight wave down the back is permissible. Woolly coats, soft silky coats, and sparse slick coats are not typical of the breed, and should be severely penalized.

Most of the best coats I've had for texture have had the slight wave.

Just some perspective...our standard says that a slight wave is acceptable (not preferred) and the international standard says that any wave is not correct.

If they could have no wave we would sure change the winners at the Specialties. They have plenty of wave!

Imagine is dogs were judged by the standard and their ability to do the job of the breed.......

Imagine if.....