Originally Posted by Cherie
Does either horse have a history of metabolic problems? Has either horse foundered in the past? Is either horse obese or have a big cresty neck? Any of these problems would put a horse at risk of foundering on one grass binge. All others I would not worry about.
I'd say "no" to all (but not sure about "big cresty neck" - my paint doesn't for sure, but I'm not positive about my qh (see pic)).