My bunny is crazy about green beans, they never make him sick. As green beans are one of those foods to be careful with bunnies, I gradually introduced them to him and made sure they would not give him the runs or cause him to get sick. I enjoy non preservative low sodium natural green beans and my bunny cannot help but steal a few of them from me. Everything I’ve looked up says that it’s only bad if there’s preservatives in them or a lot of salt. He’s had no bad reactions to this and likes the canned ones better than uncooked green beans, he wolfs them down and I watch him for any ill results but he’s fine and healthy.
I’d never feed them canned fruit either, but some canned vegetables aren’t processed like they do to fruit.
There are also canned vegetable foods like
http://media.safebee.com/assets/images/2015/1/canned-food.jpg.838x0_q67_crop-smart.jpg
https://s-media-cache-ak0.pinimg.com/736x/10/28/42/1028422c51092535e7280bf28bf84ad1.jpg