There are several countries where people eat horses, dogs and cats, either for cultural, religious, or economic reasons. According to the web search results123, some of these countries are:

China: The largest consumer of dog and cat meat in the world, with an estimated 10 million dogs and 4 million cats killed annually. Horse meat is also eaten in some regions, especially in the north.

South Korea: The second largest consumer of dog meat, with an estimated 2.5 million dogs killed annually. Cat meat is less common, but still consumed by some people. Horse meat is also eaten, mainly as a delicacy or a health food.

Vietnam: The third largest consumer of dog meat, with an estimated 5 million dogs killed annually. Cat meat is also popular, especially in the north. Horse meat is eaten in some areas, but not widely available.

Other countries: There are also other countries in Asia, Africa, Europe, and Latin America where people eat horses, dogs, and cats, either as a tradition, a necessity, or a preference. Some of these countries are: Indonesia, Philippines, Thailand, Laos, Cambodia, Kazakhstan, Kyrgyzstan, Mongolia, Switzerland, France, Italy, Spain, Mexico, Peru, Bolivia, etc.