The very top of the knot in the tree right above my knee and im 6 feet tall. Thars the best i can do for relative size for now
I'm 6'-5" tall and from the floor to the top of my knee is 23"-1/2 if that helps?
No it doesn't help except to let us know that you are 6' 5"! So congrats, I guess!
And I agree with Buckeye on the weight. 175ish.
Just trying to point out...that the OP could easily measure the height of his leg and compare it to the tree knot he referenced. And that my legs (probably longer than average) don't suggest that the knot in the tree or the height of the hog are very tall.
Another thing to consider when looking at photos of animals compared to objects of known size, is that it is VERY important that both subjects are at (or very near) the same distance away (focal plane), or you will end up with quite an illusion.
Most hogs (even mature, big ones) will not exceed 30" at the shoulder, most less than that. A hog that truly stands 36" will be so evident, that no one will need to ask.