The animals living on grass are ___. 

Carnivorous: Describes an organism that primarily eats meat or the flesh of other animals.

Glaminivorous: This term does not exist in standard English. It appears to be a combination of "glamorous" and "carnivorous," but it is not a recognized term with a specific meaning.

Herbivorous: Describes an organism that primarily consumes plants or plant-based materials.

Omnivorous: Describes an organism that eats both plants and animals, indicating a diet that includes a variety of food sources.

In the context of diet preferences:

• Carnivorous animals primarily consume meat.
• Herbivorous animals primarily consume plants.
• Omnivorous animals consume both plants and meat.

"Glaminivorous" appears to be a made-up or non-standard term and doesn't have a recognized meaning in English.

but there is "Graminivorous" which is an adjective that describes an organism, typically an animal, that primarily feeds on grass or grass-like plants. The term is derived from Latin, where "gramen" means grass. Animals with a graminivorous diet are herbivores that specialize in consuming grasses as a significant part of their diet.

"Graminivorous" and "herbivorous" both refer to animals that consume plant-based diets, but there is a specific distinction:

Graminivorous: This term specifically emphasizes a diet that is focused on grasses. Animals described as graminivores primarily feed on grass or grass-like plants.

Herbivorous: This is a more general term that encompasses animals that eat plants. Herbivores may consume a variety of plant materials, including leaves, stems, fruits, and more. While graminivores fall under the category of herbivores, not all herbivores are strictly graminivorous; they may have a more diverse plant-based diet.

In summary, "graminivorous" is a more specific subset of "herbivorous," referring specifically to animals that predominantly consume grasses.