I use harnesses for mine. It isn't really that dangerous as long as it's not a dangerous harness and used properly.
Here is Aroma wearing a bunny sports harness. I sometimes go to rabbit jumping contests, and the rules state the ring to fasten the lead must be placed on the back of the harness, not in the middle or around the neck, as it puts too much strain on the neck. This way it divides the force on the neck and belly if the rabbit starts to pull. As you can see the rabbit doesn't mind the heartless
You can't walk a rabbit like a dog, don't expect it to come running if you pull the lead, quite on the contrary it'll probably start pulling the other direction even more:roll:
My rabbits have been used to harnesses since they were small (it's not recommended to start until they are 3 months because their bones are too soft earlier) but I have also tried it on older rabbits with various results.
Some lay down flat and refuse to move, others don't even notice the harness is there. :roll:
The first times at least it might be smart to give the rabbit some treat when attaching the harness, I've experienced many wants to chew the harness when I try to get it around the neck, a banana or piece of pellets keeps them occupied.
One important rule however is this: NEVER leave your rabbit wearing a harness unattended. It could entangle itself in the lead or get stuck, leading to disaster.
The first time I ever heard my rabbit really cry was when Zakura got the lead around her leg. I got it of quite quickly, (usually when that happens I just let go of the lead and try to capture the rabbit, to avoid pulling it's leg of:shock: ) Now I am careful to keep the lead of the ground when walking the buns and keep a close look on their back feet.
Also when Zakura was younger she tended to get her front paw stuck into the neck-ring, but that was only because the harness was far too big for her, I later got her a smaller harness.
For a completely other notice if my bunnies have been eating wet grass, even been outside in the rain, ever since they got their runs. They're not dead yet:roll: And what does wild bunnies do? Take the grass inside so it won't get wet during rain?