In Saint-Exupery's The Little Prince, where do we see the prince's keen ability to notice details?

We see the little prince's keen
abilities of observation and paying attention to
detail in several places. The first instance takes place when we meet the
prince for the very first time. The prince opens his conversation with the pilot in the
Sahara by asking the pilot to draw him a picture of a sheep. The pilot, feeling that his
drawing skills had been thwarted when he was a boy drew him one of the two pictures he
felt he knew how to a draw, a picture of a "boa constrictor from the outside" (Ch. 2).
We learn earlier that when most people see his drawing of an elephant inside of a boa
constrictor they reply, "That is a hat," which is a response the pilot uses to judge a
person's abilities to reach "true understanding" (Ch. 1). However, when the prince sees
the drawing he immediately replies, "No, no, no! I do not want an elephant inside of a
boa constrictor" (Ch. 2). The prince's ability to recognize
the picture as an elephant inside of a boa constrictor proves that he has a
keen sense of perception and a keen ability
to notice details. If you look very closely at the drawing in Chapter 1,
you'll see that you will only be able to tell that it is a picture of an oddly shaped
snake if you look all the way to the end of the drawing and notice that what appears to
be the brim of a hat actually has eyes. Once you see that
it has eyes, you may then be able to notice that it has a very long neck and tail, like
a snake. Plus, since we know that snakes are known to swallow their prey whole, we will
then be able to observe that what might be a snake is probably oddly shaped due to what
it has recently swallowed. Finally, we might then be able to see that the shape inside
the snake looks a bit like the silhouette of an elephant. Hence, the little prince's
ability to carefully observe the picture and deduce that it is a picture of an elephant
inside of a snake and that the only type of snake capable of swallowing something as
large as an elephant shows us that the prince has a keen sense of
perception and is able to reach "true
understanding."

Other instances of the prince's keen ability to pay
attention to details can be seen with relation to his descriptions of his
planet and of his traveling adventures. For
example, we learn in great detail why the baobab trees are
a particular threat to the prince's planet. We learn that the planet is infested with
baobab seeds and that if these seeds grew into trees, they would crush the tiny planet.
We see the pilot's account of the prince's description of the problem with baobab seeds
in the lines:

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Now there were some terrible seeds on the planet
that was the home of the little prince; and these were the seeds of the baobab. The soil
of that planet was infested with them. A baobab is something you will never, never be
able to get rid of if you attend to it too late. (Ch.
5)

Hence we see that all
throughout the story the little prince is characterized as having a keen sense of
perception, a keen ability to observe details, and a keen ability to reach "true
understanding."