Q:

Which mammal has the longest life expectancy?

A:

Quick Answer

The mammal with the longest life expectancy is the bowhead whale. Although they were once thought to have a 50 to 70 year lifespan like other whales, it is now estimated that they can live to be 200 or older.

Know More
Which mammal has the longest life expectancy?
Credit: Michael Nolan Robert Harding World Imagery Getty Images

Full Answer

Usually, age in animals is estimated using the teeth, and because bowhead whales lack them, it is difficult to estimate their age. Scientists did not know that the bowhead whale had an unusual lifespan until some interesting specimens turned up during whale hunts. These whales had embedded harpoons and spears in them that could be dated to at least 100 years prior, according to the University of Alaska Fairbanks. One discovered in 2007 had an embedded harpoon linked to production in New Bedford, Massachusetts, in 1890. Scientists then used chemical evidence from bowhead whales' eyes to estimate their ages, and they found one specimen with an estimated age of 211 years.

Learn more in Zoology

Related Questions

  • Q:

    What is the smallest mammal on earth?

    A:

    There are two contenders for the world's smallest mammal, depending on whether one is going by length or weight. The world's lightest mammal is the Etruscan shrew, while the shortest is Kitti's hog-nosed bat.

    Full Answer >
    Filed Under:
  • Q:

    How much does the largest mammal weigh?

    A:

    According to National Geographic, the blue whale, a mammal, grows up to 100 feet in length and can weigh over 200 tons. It's the largest animal ever known to exist. Despite its enormous size, the blue whale's diet consists almost entirely of tiny crustaceans called krill.

    Full Answer >
    Filed Under:
  • Q:

    What traits are shared by non-mammal animals?

    A:

    All non-mammals are hairless and lack mammary glands. Non-mammals with jawbones have lower jaws composed of multiple bones; mammals have a lower jaw composed of a single bone. A non-mammal with teeth loses and replaces teeth multiple times during its lifespan, while a mammal goes through this process only once.

    Full Answer >
    Filed Under:
  • Q:

    What is the longest worm in the world?

    A:

    The longest worm in the world is a species of marine worm known as Lineus longissimus, more commonly called the bootlace worm. It is a variety of ribbon worm and lives in shallow coastal waters near western Europe.

    Full Answer >
    Filed Under:

Explore