Unless, that's Bill Kazmaier holding up that Wolf, I doubt it's 230lbs.
I could believe every bit of 230 lbs. If the holder is 6 feet tall, that wolf is at least 7 feet long, and mostly bulky body. Never have I seen one like that. Find yourself in the woods with a six shooter, and the pack is 10 you are going to hope for no scent and being very quiet in a tall tree. That is one reason, wolves should NOT be reintroduced into areas my forefathers cleared them out of.
I own a mastiff that weighs 225 lbs, and I think the wolf in that photo weighs 230 lbs easily. Big chest, long heavy body, huge head, meaty shoulders and hips.