How do you know that the animal is ruminant or not just by observing the animal?

You can identify a ruminant by observing its physical characteristics and behavior. Ruminants typically have a specialized stomach with four compartments, allowing them to ferment and digest plant material efficiently. Additionally, they often display behaviors like chewing cud, where they regurgitate food to chew it again. Common examples include cows, sheep, and deer, which also have certain dental and digestive traits that distinguish them from non-ruminants.