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The french do have a strong appetite for horse meat..it is said to be like beef, but sweeter.
There are abbattoirs (slaugter houses) dedicated to horses.
Where US troops had canned meat called SPAM during WW2, the British troops often had canned horse meat ...which they called "bully beef'"!
Here inthe US, they used to harvest wild horses for dog food...but the lefties and animal rightsers..launched a campaign which stopped the practice.
Personally, I think they should be "managed", same as moose, deer, coon and grizzly bears..
BTW: Once again, President Trump tried to bring common sense to bear...to both save and gain the country some money...
...But that of course, was introduced to congress...where great ideas go to die !
https://www.theatlantic.com/technology/archive/2017/06/horse-meat/529665/ Article indicates that both Mexicans and Canadians butcher horses...