Yes, if not treated right away.
Grass tetany is an anti-quality factor and a metabolic disease where livestock experience a severe case of magnesium deficiency while on spring pasture. Also known as hypomagnesemic tetany, grass staggers, winter tetany or wheat pature poisoning, it primarily affects older lactating cows that are 2 months into their lactation period (or suckling 2-month old calves) but can also affect young or dry cows and growing calves. Grass tetany primarily occurs while grass is in its vegetative stage (or succulent immature grass) and after a pasture had been fertilized with lots of nitrogen. Nitrogen will decrease availability of magnesium to cattle, especially with potassium-rich soils, causing a significant decrease in magnesium in the blood serum of cattle. See the related links below for more info.
Cerebral Edema.
Cattle that are laying (or sitting) in the grass, or cattle laying down in the pasture.
Wherever grass grows, whether it be on lawns or in fields, anywhere that grass grows often cattle will find them and eat the grass in those areas.
Anything.There are lots of things that can make cattle sick. Infection, bacteria, viruses, parasites, hardware, poisonous plants, antiquality factors such as bloat, nitrate toxicity and grass tetany, bad feed, or some genetic mutation that showed up later in life.
shrubs and cattle grass
Grass has very little to do with global warming, unless you mean the grass grown for cattle pasture after the rainforests were cut down. Rainforests absorb tonnes of carbon dioxide from the air; grass not so much.
Grass tetany
No. If grass-fed cattle got any grain, they wouldn't be grass-fed then. Grass-fed beef comes from cattle that are finished on grass only, with absolutely NO grain.
Grass.
Man.
Where cattle defecate there will sometimes be a hillock of grass.