The mammalia,or breasts.
No - part of the definition of a mammal is that it is a vertebrate with hair, viviparous birth, endothermic and produces milk to nourish their young. A vertebrate is, by definition, an animal with a distinct backbone.
Both the hippopotamus and pig cannot sweat due to the fact that they have no sweat glands. The platypus is the only mammal that does not have live young; they lay eggs. Lastly, every mammal produces milk, it's part of what classifies them as mammals (but then again, so is having live young, but that's been proven wrong). By the way, the female platypus will produce milk for her young.
The udder. The skin, which has hair, is also a body part that shows that a cow is a mammal.
mammary alveolus
mammary gland
The ovaries.
nose
The nervous system, especially the brain, produces endorphins.
Liver
A pig is a mammal because it fits a mammals description. It is warmblooded and it has a vertebrae. A pig also gives birth to live offspring. Although fine, A pig has hair and it produces milk.They are warm blooded, they also feed from their mothers breast milk.
"Mammal" is a noun. It refers to a class of animals characterized by the presence of mammary glands, which produce milk for feeding their young, as well as other features like hair or fur.
the heart