Skip to content

Mammals: Definition, Characteristics, Types and Examples – Berkeley

Mammals: Definition, Characteristics, Types and Examples

Society of Women in the Physical Sciences – We, as humans are also mammals, therefore, humans tame other mammal species. Mammals, including humans, are warm-blooded vertebrates. Vertebrates are creatures with backbones and have hair.

Mammals feed their young by suckling, in contrast to poultry. The mammalian brain is considered more developed than other species. Check out the article below to find out more about mammals. JP Judi Slot Online MPO

Definition of mammal

The word mammal is a creation of Carl Linnaeus. Mammals come from the Latin ‘mamma’ which means nipple. This word was first put forward in 1758. Mammals are known and referred to as mammals because mammals suckle their young.

Mammals have mammary glands as a food source. Most mammals reproduce by giving birth to their young, but there are some mammals that do not give birth, or lay eggs. Mammals of this type called monotremes have mammary glands, but do not have nipples. Therefore, these monotremes are still classified as mammals.

Grameds can do various interesting facts and fun mammalian adventures through the Encyclopedia of the Mammal World, which is below.

Read also: SWPS Scientist: Elizabeth Olsen

Characteristics of Mammals

The following are the characteristics of mammals that distinguish them from other species.

  • have mammary glands.
  • have a backbone (vertebrates).
  • have limbs to move such as swimming, running and holding things.
  • have hair to cover their entire body.
  • have fingernails or claws. These nails or claws are useful for climbing or holding food.
  • They have different types of teeth, canines, incisors and molars.
    have lungs.
  • It has a heart which is divided into two atria and two chambers.
  • Most reproduce by giving birth (viviparous) some also reproduce by laying eggs (ovoviviparous)
    has a place for the development of the embryo, namely the uterus

Mammals that can live in dry or wet places make them unique and spread all over the earth. Get to know all mammals through the Encyclopedia Traveling the Mammal World.

Read also: SWPS Scientist: Olivia Jensen, Definition of Science

Mammal Animal Anatomy

Mammals can be identified by having sweat glands as well as mammary glands. However, there are several other features that are not visible if only examined through fossils. For the most part, the characteristics below were not shared by the ancestors of Triassic mammals. Here is the anatomy shared by all mammals:

  • Jaw joint: Most mammals have a lower jaw bone that attaches to the small skull bone and forms a joint.
  • Middle ear: Mammals can hear by means of sound which is carried from the eardrum by a chain of three bones, the incus and the stapes.
  • Teeth: Mammals have a layer of enamel that is present on the surface of the teeth. The enamel layer consists of a prism, a solid structure shaped like a rod and elongated.
  • Occipital: Mammals have two knobs at the base of the skull that go into the topmost neck. Most other tetrapods have only one.
  • Sexual dimorphism: most mammals, males are larger than females. All male mammals fight for the female. The larger female mammals have a lower reproductive rate than the smaller ones. This suggests that fecundity selection favors females that are smaller in most mammals.
  • Biological systems: Majority of mammals have seven vertebrae. All mammalian brains have a neocortex, this part is unique to mammals. Mammalian lungs are shaped like a sponge or a honeycomb. The mammalian heart is divided into four chambers, two upper and two lower atria. The four-chambered heart separates and ensures blood can flow in the right direction. Mammalian skin consists of three layers, the epidermis, dermis and hypodermis. The epidermis of mammalian skin serves as a waterproof layer.
  • Fur: ​​Mammals have fur, with different shapes and types. Each type of mammal fur has its own function. Generally, the function of mammalian fur is for sensory, camouflage, protection and also waterproofing. Some mammals that live in the tropics have the same coat length as arctic mammals.
  • Reproductive system: Mammals are gonococcal. Gonorrhea is giving birth with male or female genitals, in contrast to hermaphrodites. Male mammals have a penis that is useful for urination and fertilization. Female mammals have a clitoris, labia majora and labia minora on the outside of their genitals. The mammary glands of female mammals are the primary source for newborn babies. In contrast to other species, although some have nipples, unlike mammals, which have mammary glands.