But whoever got the picture could easily have taken a picture of the same scene with something in it for scale. Anything from a dollar bill to a cartridge would do.
The pic came from a wildlife cam. Even if it hadn’t that would be one cooperative giant squirrel, that would just stand there while you put something next to it for scale.
Even a stew pot for scale.
Fox squirrels are very common and nowhere that large so what’s up with these? 26 inches tall but only 3 lbs? That’s a very skinny squirrel. A cat’s body is about 20 inches (nose to butt, not counting the tail) but they weigh around 10 lbs. Someone isn’t getting the story straight.
Have you ever tried to sneak up on a squirrel and put a dollar next to them? It's harder than it sounds.