What is it that walk 4 legs in the morning 2 in midday and 3 in the evening ?

this question has been given to me at college in france for an exam more than 20 years ago and it is related to mythology .
I've gave this one to some people, well..they still trying to figure it out .
Man. This was the riddle of the Sphinx in the Oedipus myth.

Baby crawls = 4 legs
Man walks = 2 legs
Old man walks with cane = 3 legs
people -- 4 as a baby 2 as a adult 3 when your older with a cane
Is that not man?

in the morning you walk on four legs, you crawl as a baby

midday, the middle of your life you walk on two.

in the evening years you use a stick and therefore three.
your shadow?
Human; baby on all fours, then standing, then needing a walking stick in later life.
A man. He crawls when he is a toddler; he walks as a man and as a old man he walks with a cane.
A human. it's lifetime is represented by a day. morning when you are a baby, midday when you are an adult, and evening when you are old.

a baby crawls on all foursthen learns to walk on two legs. Third legs is really a stick to help you walk.
Mankind - crawls as a baby, walks on two legs as an adult, and walks with a cane in old age.
This was the (answered) riddle of the sphinx.
It's a person - as already stated several times. Follows the stages of life - baby, middle age and old age aided with a stick.
very clever. the other answers seem to be correct
Oedipus answered this question from the Sphinx.
It is man.

We crawl on all fours in the morning of our lives.
We walk upright on two legs in the midday (adult) years.
We use a cane to walk on 3 legs in the evening (elderly) years.

It is a great puzzle. My high school students discuss it when we read Antigone in the 10th grade.
4 legs- baby-crawling
2 legs-independant man-walking on 2 legs
3 legs-old man-2 legs plus a stick!
Known as the Riddle of the Sphinx, the answer is man who, as a child (in the morning of his life) crawls on all fours, as a man (at midday in his life) walks upright on two legs and as an old man (in the evening of his life) walks with the aid of a cane.
Man (It's the riddle of the Sphinx)

When a baby, in the morning of our lives, we crawl on all fours.
In the middle of our lives we walk on 2 legs.
In the evening of our lives, when we are old, we often use a crutch (the 3rd leg)
the human being through the different stages of life.
Old question, think I heard it on a Thundercats Cartoon. The answer is Human, or Man depending on who you are speaking to. Man begins life ( as a baby ) on all fours. In his prime walks on 2 legs. Then when he's old uses a cane to help him walk.
Thats a man. crawling,walking and assisted.
Mythos? I dunno, I allwyas heard it that way. I suppose a Cenatur could be Mythos.
you wake up with your partner 4legs, go to work on your own 2legs, on your way home you stop in at the pub and end up getting so 1legged your friend has to help you home.
A dog (or any other four legged animal) that gets hit by a car, loses two legs and then a vet is only able to attach one leg after surgery that ends in the evening.

Why be normal and regurgitate the same answer.
It's a person through his life. It's the riddle of the sphix.
Great question!

"The morning" - a baby,you crawl
"midday" - midlife, you walk
"evening" - old age, you use a cane

When we are small we walk on all fours.

Then we learn to walk on two legs.

At oge we walk on three, two legs and a cane.
a man..
the whole day is suppose to represent his life..
hes a baby int he morning. (beginning of life)
hes in his youth years int he middle of the day
and then hes walking with a cane in the evening..
a shadow, in the morning ur shadow is in front of u and is behind u, midday sun is perpendicular, shadow is under u, at night only one leg behind u appears, i guess so
The man naturally. Child in four paws in the morning, adult on the two legs at midday, old man with a stick in the evening
A mutant!!
emo phillips had the best answer:
a donkey; in the morning it has 4 legs, mid-day you cut off 2 and in the evening you glue 1 back on.
The Riddle of the Sphinx

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travelers who passed by. If the traveler failed to solve the riddle, then the Sphinx killed him/her. And if the traveler answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

The solution: A man, who crawls on all fours as a baby, walks on two legs as an adult, and walks with a cane in old age.

Of course morning, noon, and night are metaphors for the times in a man's (person's) life. Such metaphors are common in riddles.There were two Thebes, apparently this Thebes was the one in Greece. And this Sphinx was apparently not the one at Giza, in Egypt.
Human, like what everybody else said.
crawls on four legs in the morning (the beginning of life), walks on two in the day (middle of life), and walks on two, with a stick in the evening (the end of life)

There is another part to this one:
what is it that walk 4 legs in the morning 2 at midday, 3 in the evening, and none as the full moon rises?

This is when they are dead, because the ancients believed that the goddess of death stalked the land with particular care during the full moon. (hence the tales of werewolves and vampires etc. all occurring at the full moon.
Not an answer, but I found the answers very interesting. Something I had never come across in over 60 years!
This is the riddle set to Oedipus by, I think , the Oracle at Delphi. The answer is Man. A baby crawls on all fours, then walks on two legs, then in old age uses a stick.