nisäkäslajeihin
Nisäkäslajeihin, which translates to "mammalian species" in English, refers to the diverse group of animals classified within the class Mammalia. These species share a set of defining characteristics that distinguish them from other vertebrates. Key traits include the presence of mammary glands in females, which are used to produce milk to nourish their young. All mammals are also warm-blooded, meaning they can regulate their internal body temperature. Another universal characteristic is the presence of hair or fur at some stage of their life cycle, providing insulation and other functions. Mammals breathe air using lungs and possess a four-chambered heart, contributing to efficient circulation.
The diversity within mammalian species is remarkable, encompassing a vast array of forms and adaptations. From