How might a change in global climate affect cattle?

The cow's hair will change and its eating habits will change. Hair changes in thickness and texture when confronted with the cold, winter months versus hot summer days. In the winter time, cows, depending on their condition and breeding, will often eat more when its colder than they can handle, or not eat at all if a blizzard makes it hard to stand at a bale and eat. In the summer however, some cattle will only graze in the cool mornings and evenings and stay in the shade during the day; other cattle like the Brahman-type cattle are happy to graze out in the hot sun.