Cows can identify the kind of grass and decide wich to eat?or they don't have that capacity?

Cows do not have the ability to identify specific types of grass and make conscious decisions about which ones to eat. However, cows have evolved to have certain preferences for different types of forage based on their nutritional needs and taste preferences. They have a keen sense of smell and taste, which helps them determine the quality and palatability of the available grasses. Cows will generally graze on a variety of grasses, herbs, and other plants, selecting what is most appealing to them at a given time.