Humans generally place animals into different categories according to their use. For example, animals considered as pets are generally not eaten. However, in some cultures animals have multiple uses, and as a result a pet animal might also be eaten. One example of a country where pet dogs are also eaten is

South Korea.

Explanation:

Animal right activist has criticized the practice of eating dogs in Asian countries especially in South Korea but this custom needs to be understood with respect to the historical socio-cultural traditions in South Korea. In South Korea dogs are more abundant than cattle and therefore dog meat is more economic than cattle meat.  The history of this tradition can be traced from the 1st century A.D.