They are able to breastfeed and not lay eggs. (They have a womb for offspring.)
They both breath with oxygen and protect their young.
There are at least 4 traits that mammals share including the fact that they are warm-blooded. Other traits include breathing with lungs, having a 4 chambered heart, and having to hunt for food.
They breathe out carbon dioxide.
All mammals share unique traits due to their common ancestry, which dates back to a specific group of early amniotes. These traits, such as mammary glands, fur or hair, and three middle ear bones, evolved as adaptations to their environments and reproductive strategies. Over time, these characteristics became defining features of the class Mammalia, allowing mammals to thrive in diverse habitats. The genetic and evolutionary connections among mammals ensure that these traits are inherited and maintained across species.
Mammals' unique traits, such as fur or hair for insulation, mammary glands for milk production, and a complex brain for problem-solving and adaptability, have likely contributed to their ability to survive and thrive in various environments. Additionally, their endothermic metabolism allows them to regulate their body temperature internally, giving them an advantage in diverse climates.
Ability to breathe air.
The earliest whale ancestors, known as cetaceans, exhibited several common traits that link them to land-dwelling mammals. They had elongated bodies, limbs modified into flippers, and nostrils positioned on the top of their heads, which facilitated breathing while swimming. Additionally, they retained some characteristics of terrestrial mammals, such as a robust skeletal structure and a hip structure that indicated they were still somewhat adapted to land. These traits highlight their evolutionary transition from land to an aquatic lifestyle.
Natural selection and really good traits.
Yes some mammals can be wild.
No. Mammals and birds are both vertebrates, particularly amniotes, but beyond this they are not relate to each other. They share a number of characteristics including:Warm bloodednessA high metabolic rateA four-Chambered heartA soft covering over their skincaring for their young.But Mammals and birds developed these traits separately.
Different mammals eat different food. Mammals occupy varying places on a food chain. Some mammals are vegetarians, they are primary consumers. Some mammals are carnivores, they are higher level consumers. Some mammals are omnivores.
Do mammals have hair on their body, yes. that is one of the many traits of a mammal. ~Nameless