Explanation

Cud-chewing animals like cattle, deer, and sheep are known as Ruminants

Ruminants: are herbivorous mammals, like cows, sheep, and goats, that have a specialized digestive system allowing them to process plant matter efficiently by regurgitating and chewing food, a process called rumination. 

Herbivores: are animals that eat primarily plants. 

Carnivores: are animals that eat primarily meat. 

Omnivores: are animals that eat both plants and animals