Q:

What is the definition of a "mammal"?

A:

Mammals, including humans, belong to the Mammalian class, which is the highest order of vertebrates. Mammals have a backbone, grow hair, produce milk for the nourishment of their young via mammary glands and are warm-blooded, or endothermic.

As endothermic creatures, mammals regulate their body temperature, which remains constant regardless of their surroundings. Mammals also use lungs to breathe air and most give birth to live offspring, with the exception of the monotremes. The platypus is a member of this group of mammals that lay eggs for reproduction. A mammal's skeleton is distinguishable because the lower jaw bone connects directly to the skull. Mammals, however, vary greatly in terms of size and appearance


Is this answer helpful?

Similar Questions

  • Q:

    What is the largest mammal on earth?

    A:

    The blue whale is the largest mammal on earth. This species reaches lengths of 100 feet long and weighs up to 200 tons. The blue whale is believed to be the largest mammal ever to exist on earth.

    Full Answer >
    Filed Under:
  • Q:

    What do whales hear?

    A:

    Whales perceive sounds in a much higher frequency than humans are able to hear, often around 120 kilohertz. Whales hear sounds as vibrations in the water around them.

    Full Answer >
    Filed Under:
  • Q:

    How do harbor seals protect themselves?

    A:

    Harbor seals defend themselves from humans and predators by relying on their sensitive hearing to alert them and allow them to vacate the area. During the breeding season, males protect their territory from rival males by engaging in stylized fighting. While strong and fast swimmers, harbor seals lack other defense mechanisms and often fall prey to killer whales, sharks and the occasional coyote or bobcat.

    Full Answer >
    Filed Under:
  • Q:

    How do dolphins communicate?

    A:

    Much like humans, dolphins primarily use sound to convey information to one another. The sound is described as "whistling" by the Dolphin Research Center. Dolphins use visual cues and body language to communicate although less often.

    Full Answer >
    Filed Under:

Explore