#classmammalia

Vertebrae that most beneficial to personal life/ or environment: 

Class Mammalia

Mammals are a group of vertebrate animals constituting the class Mammalia, characterized by the presence of mammary glands which in females produce milk for feeding their young, a neocortex, fur or hair, and three middle ear bones. For example, humans, cats, dogs, mice, rabbits, cows, lions, elephants, kangaroos, whales, seals, dolphins, porpoises etc.

Mammals have hair or fur; are warm-blooded; most are born alive; the young are fed milk produced by the mother's mammary glands; and they have a more complex brain than other animals.

Mammals undoubtedly play an important role in ecosystems by providing essential services such as seed dispersal, pollination and regulating insect populations, and reducing disease transmission and there is some evidence that some groups act as indicators of general ecosystem health.

Mammals play many important roles in ecosystems, and they also benefit people.

Mammals have important roles in the food webs of practically every ecosystem. Mammals are important members of food chains and food webs, as grazers and predators. Mammals can feed at various levels of food chains, as herbivores, insectivores, carnivores and omnivores.

Mammals also interact with other species in many symbiotic relationships.