I suspect that you hit him high on the near side and maybe only clipped that back lung with a bullet that did not expand well. He will lay up and probably better that you didn't push him. Watch and listen for blue jays, crows and red squirrels because they will likely find him before you will if he is down and out. If you hit him farther back, you should have seen him hunch and jumping a fence would be unlikely. They don't bleed to the ground well with a high body hit. If he could go a ways in your place I would check the creek bottoms because they will go for water and the thickest security cover that they can find. A tracking dog would sure be useful in your situation. A couple of buddies for more eyes on the ground too. They are really fit right now and fat and muscle can roll over a wound and they will drop even less blood to the ground. Hope that you find him.
