what are the distinguishing characteristics of mammals?
156175
['The presence of hair or fur.', 'Sweat glands.', 'Glands specialized to produce milk, known as mammary glands.', 'Three middle ear bones.', 'A neocortex region in the brain, which specializes in seeing and hearing.', 'Specialized teeth.', 'A four-chambered heart.']
307494
The common characteristics are hardiness, mobility and ability to subsist on sparse forage. These animals provide milk, cheese, meat, hair, wool and skins and dung for fuel.
1339447
Mammals are animals that are (mostly) covered in hair and that nurse their young with milk. They include duck-billed platypuses, mice, elephants and human beings. It is true that all mammals can produce heat from within, a talent known as endothermy. This means that most mammalian species do indeed have warm blood.
276673
['They are bilaterally symmetrical.', 'They are triploblastic, which three layers.', 'They show organ system grade of organisation.', 'The body is soft and unsegmented.', 'Body is divisible into three regions – head, a visceral mass, and ventral foot.', 'Body is covered by a mantle and shell.']
229988
['A love of animals.', 'Empathy, patience and sensitivity.', 'Rational objectivity.', 'A thorough, methodical approach.', 'Communication skills.', 'Scientific ability.', 'Calmness in pressurised or emotional situations.']
506844
The main difference between mammals and other vertebrates are three characteristics: hair, milk production in mammary glands, and three bones in the inner ear. Extant mammals are divided into three subclasses based on reproductive techniques (monotremes, marsupials, and placentals) consisting of 27 orders.
368859
Whereas birds have feathers, lack teeth and lay eggs, mammals have fur or hair for insulation, possess teeth and give birth to live young. Although birds are more closely related to reptiles than mammals, birds and mammals have several characteristics in common.
1322009
What makes a marine mammal a marine mammal? They must meet the characteristics of all mammals — they breathe air through lungs, are warm-blooded, have hair (at some point during life), and produce milk to nurse their young — while also living most or all of their lives in or very near the ocean.
613334
Mammals are the animals that make up the scientific class Mammalia. Throughout the entire Earth, there are over 5,000 different species of mammals. ... All mammals have hair of some sort, as well as mammary glands. In female mammals, the mammary glands produce milk that they use to feed their young.
428393
Humans are terrestrial animals, characterized by their erect posture and bipedal locomotion; high manual dexterity and heavy tool use compared to other animals; open-ended and complex language use compared to other animal communications; larger, more complex brains than other primates; and highly advanced and organized ...
139077
['Animals are multicellular.', 'Animals are heterotrophic, obtaining their energy by consuming energy-releasing food substances.', 'Animals typically reproduce sexually.', 'Animals are made up of cells that do not have cell walls.']
714232
All animals are eukaryotic, multicellular organisms, and almost all animals have specialized tissues. Most animals are motile, at least during certain life stages. Animals require a source of food to grow and develop. All animals are heterotrophic, ingesting living or dead organic matter.
1452968
Ducks are not mammals. Mammals are vertebrates that possess certain characteristics ( hair, middle ear bones, and mammary glands). Basically, they actually give birth to their young alive.
876444
['All animals are multicellular, eukaryotic heterotrophs —they have multiple cells with mitochondria and they rely on other organisms for their nourishment.', 'Adult animals develop from embryos: small masses of unspecialized cells.', 'Simple animals can regenerate or grow back missing parts.']
1141294
['Hair and Fur. ... ', 'Mammary Glands. ... ', 'Single-Boned Lower Jaws. ... ', 'One-Time Tooth Replacement. ... ', 'Three Bones in the Middle Ear. ... ', 'Warm-Blooded Metabolisms. ... ', 'Diaphragm. ... ', 'Four-Chambered Hearts.']
502558
Mammals differ from other vertebrate animals in that their young are nourished with milk from special mammary glands of the mother. Mammals are distinguished by several other unique features. Hair is a typical mammalian feature, although in many whales it has disappeared except in the fetal stage.
1189120
['All animals are made up of cells that do not have cell walls.', 'All animals are multicellular organisms.', 'Most animals reproduce sexually. ... ', 'All animals are capable of self-propelled motion at some point in their lives.', 'All animals are heterotrophic and must consume other organisms for energy.']