Well I have done a bit of pig hunting in New Zealand, bit hard to tell size, but that a big pig if its NZ, (I have my doubt's),
Guessing that's a four door Hi lux, about the size of a talcoma, guessing that's a 250 lb pig or more. Pigs are normally not shot in NZ, normally knifed, (stuck), but anything real big my be shot, the shield, (shoulder) on a pig is pure grissle, up to 3" thick, I have seen 100gr spft point .243 fail to penetrate, on a big boar.
If that's taken in NZ, its down in the south island, but I wouldn't be surprized, if that photo is from Argentina. boar's get real big down there, 400 plus lbs.