Wild pigs are an incredibly successful design in the animal world. Different species roam across North America, South America, Asia, Europe and Africa.
Around the world, lions, tigers, jaguars, pumas, hyenas, crocodiles, anacondas, komodo dragons and of course humans hunt pigs every day yet their numbers stay high in most places.
These ones look like they're dancing but they were really just play fighting.

Western Ghats area of India
June 2015