Those look like our Javelinas here in So Arizona...
Wild boars, but smaller ones.
I was hunting at beautiful hunting area in Lika, Croatia (near Lakes Plitvice).
After hunt, hunter give a honour to prey with fire.
What's with the fires on the big posts?
Javelinas (at least young ones) are really good to eat. Older ones can get pretty tough. They can be barbequed, spitted and roasted in a pit over coals, baked in an oven, and undoubtedly many more ways.
Maybe that ritual have roots in pagans customs, but it was verry amazing and efective