animals are classifiied into 3 groups

Although living creatures have many species of animals, they can be classified into three main groups based on their modes of nutrients: herbivores, carnivores and omnivores. Herbivores are animals that live by eating plant-based food such as vegetables, grass, fruits, etc. They have a unique special digestive system consisting of a long stomach and intestines with a large cecum. In addition, herbivores' molars are usually flat and wide, which helps them break down and crush the plants they eat. Secondly, which are called carnivores is an organism that relies on mainly eating meat. Their digestive system is completely different from herbivores, only including one big stomach and digestive enzymes. Their molars are extremely sharp, therefore, they can tear large pieces of meat into small pieces conveniently for the digestive process. Finally, omnivores are animals that get their energy to sustain life from the food sources of both plants and animals, including humans. They usually have a digestive system with a stomach and intestines of intermediate length between herbivores and carnivores. The jaws of omnivores are often large, the jawbone is developed even if their molars are large and hard-edged from chewing plant food. Three classification of animals according to their diet which are herbivores, carnivores, and omnivores can not exist without each other.