Q:

What animal has three eyes?

A:

The tuatara, a reptile found in New Zealand, has a partial third eye, also known as a parietal eye, on top of its head. This eye has a retina, lens, cornea and nerves, but it isn't used for sight.

Know More

Full Answer

Scales grow over the third eye of the tuatara in its first six months. This prevents the eye from being used as a sight organ, but it is still light sensitive. The purpose of the third eye isn't well understood, but it may help the tuatara to regulate its body temperature, absorb ultraviolet radiation for vitamin D synthesis and regulate its circadian rhythm.

Learn more in Zoology

Related Questions

  • Q:

    What animal is bigger than any dinosaur?

    A:

    The largest animal ever known to exist is Balaenoptera musculus, commonly known as the blue whale. The blue whale is larger than any dinosaur discovered so far.

    Full Answer >
    Filed Under:
  • Q:

    What is the toughest animal in the world?

    A:

    The tardigrade (Hypsibius dujardini), also known as the water bear, is considered the toughest animal in the world. These micro-animals can survive in environments that would kill almost any other creature.

    Full Answer >
    Filed Under:
  • Q:

    What is an animal that stats with "X"?

    A:

    An example of an animal that starts with the letter "X" is the Xerus inauris, commonly known as the South African ground squirrel. These squirrels can be found in the southern African countries such as South Africa, Botswana and Namibia.

    Full Answer >
    Filed Under:
  • Q:

    What is the most recently evolved animal?

    A:

    Given the timescales involved in animal evolution and the difficulty of identifying new species as their first members emerge, there is no single species that could be said to have evolved most recently. Some animals, however, have populations that do not breed together and could be regarded as emergent species.

    Full Answer >
    Filed Under:

Explore