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Mammals are unlike other vertebrates in two distinct ways. First, all mammals have hair, unlike other vertebrates. Also, female mammals carry their offspring to full term …in the uterus, whereas most other vertebrates lay eggs.
some have back bones and the others dont
What makes you a mammal? You need to be hairy. All mammals have this distinguishing feature. You need to have modified sweat glands that produce milk for your young. As…suming that you are a female, of course. Your lower jaw has a single bone on either side. Most other animals have several bones in the jaw. Your hearing is acute because you have three bones in your middle ear;the stapes,incus and malleus. You have a sheet of muscle that separates your heart and lungs from your liver,stomach,kidney and intestines. This is called a diaphragm. This helps in rapid locomotion but also means you are the only kind of animal that can get a hernia(torn diaphragm). Your main artery leaving the heart curves to the left. Did I say that all distinguishing features are going to have a purpose? It goes left, deal with it! In birds it curves to the right and all other animals have many arteries leaving the heart, so there! For more information, please see www.mammalsrus.com
The presence of a backbone (a "vertebrae") does not DEFINE a mammal because other animals also have backbones, eg reptiles, birds and fish - these animals are also "vertebrate…s". Mammals are mammals because they are the only animals to have fur/hair and feed their young on milk.
Mammals, along with birds, are warm-blooded. Along with reptiles and birds, they are amniotes. Mammals are unique among vertebrates in that they have hair somewhere on their b…odies, feed their young with milk, and give live birth (except for the five species of monotremes). Placental mammals (about 90% of mammals) are unique in that they nourish their young in a placenta before giving birth.
mammals have hair all over their bodies, they give birth to live young, they include the largest animal ever-the blue whale
Echidnas are different as, like platypuses, they are egg-laying mammals. This group of vertebrates, known as the monotremes, is unique: their method of reproduction is laying …eggs, yet they nurture their young on mothers' milk. Apart from producing milk to feed their young, there are other differences: they do not fit with egg-laying reptiles as echidnas are warm-blooded; nor do they fit with egg-laying birds because all birds have feathers, and echidnas, like other mammals, have hair/fur.
Primates can see color
they swim in both water and walk on land
The defining characteristic of a mammal is that it feeds its young on mothers' milk . This is the case whether the mammals is a placental, a marsupial or a monotreme (egg-lay…ing mammal).
Only mammalian kidneys have a renal pelvis (dilated beginning of the ureter) and renal pyramids (8 to 18 cone-shaped tissues in the renal medulla). The renal medulla (the inne…rmost part of the kidney), and the renal cortex (surrounds the renal medulla) are more distinguishable in mammals than in other vertebrates.
All mammals including woolly mammals are different from other vertebrates in possession of hair ,wool is also type of hair .
Monotremes lay their young in eggs.
In Animal Life
Mammals have two unique characters that differentiate them from other vertebrates.They are: 1.Mammary Gland 2.Hair.