This is what I call a lie by implication, in several ways.
One, the photo is clearly, really beyond any question, forced perspective. Forced perspective is, in and of itself, a lie. It's not true perspective. If it were, it wouldn't be "forced". You don't have to force true perspective. The implication is that the pig is larger than it really is. The implication is a lie.
Two, the hunter says "...he'll feed his family for a year after he bagged a 500-pound wild hog...". That's another lie by implication. They may well still be eating some of this hog a year from now but even a family of two eats a lot more than the perhaps 200 pounds of meat they'll get from this hog. With the context of this supposed giant hog, the implication is that it is sufficient to support his family for an entire year. I shoot deer every year and we still have venison left a year later. I would never say "I'll feed my family for a year." from those animals.
On the forced perspective, the average male head is slightly over 6" wide. If the perspective is normal, that hogs is nearly 9 feet long. That would be nearly 50% larger than the typical max size.