What is the message in the poem "The Law of the Jungle" in The Jungle Book?

In my opinion, this poem defines a primal form of law -
i.e. a set of rules and guidelines.  I've found more than a few of them appropriate in
my day to day life. Let's go through the poem. Be advised that following is my
interpretation only.

"NOW this is the law of the jungle, as
old and as true as the sky,
And the wolf that shall keep it
may prosper, but the wolf that shall break it
must die."

[This is about the
importance of these rules. Also, points out that following them is not a guarantee of
success. ]

"As the creeper that girdles the tree trunk, the
law runneth forward and back;
For the strength of the pack is the wolf, and
the strength of the wolf is the pack."

[Law binds both the
pack and a wolf or society and a man. Second part emphasizes the interdependence between
two.]

Wash daily from nose tip to tail tip; drink deeply,
but never too deep;
And remember the night is for hunting and forget not the
day is for sleep.

[Advise on following daily routine and
work-life balance. Could not be overemphasized.]

"The
jackal may follow the tiger, but, cub, when thy whiskers are grown,
Remember
the wolf is a hunter—go forth and get food of thy
own."

[`thy whiskers are grown`: when you have grown
up.

Rest should be self
evident]

"Keep peace with the lords of the jungle, the
tiger, the panther, the bear;
And trouble not Hathi the Silent, and mock not
the boar in his lair."

[Keep good manner. Don't quarrel
with people you don't have to. ]

"When pack meets with pack
in the jungle, and neither will go from the trail,
Lie down till the leaders
have spoken; it may be fair words shall prevail."

[When
conflict is eminent - i.e. two groups meet and neither is willing to give ground - don't
jump in and start the fight. Sometime talking works.]

"When
ye fight with a wolf of the pack ye must fight him alone and afar,
Lest others
take part in the quarrel and the pack is diminished by
war."

[One of the more useful lines. If you have issues
with someone, talk and try to resolve them privately, or others would may take side and
conflict can escalate. ]

"The lair of the wolf is his
refuge, and where he has made him his home,
Not even the head wolf may enter,
not even the council may come."

[Unalienable rights of
individuals.]

"The lair of the wolf is his refuge, but
where he has digged it too plain,
The council shall send him a message, and so
he shall change it again."

[Rights of individuals can be
superseded if they endanger the security of the pack. ]

"If
ye kill before midnight be silent and wake not the woods with your bay,
Lest
ye frighten the deer from the crop and thy brothers go empty
away."

"Ye may kill for yourselves, and your mates, and
your cubs as they need and ye can;
But kill not for pleasure of killing, and
seven times never kill man."

[Literal meaning of above two
should be obvious. They are about keeping other people's interests in mind, not wasting
resources and never doing something the endangers the entire group,  when you make your
living. ]

"If ye plunder his kill from a weaker, devour not
all in thy pride,
Pack-right is the right of the meanest; so leave him the
head and the hide."

[My understanding of this contrasts
severely with Ms. Thompson's:
`Pack-right`: Universal rights. Rights that
belongs to all members of the pack.

`head and the hide`:
Least desirable part of the kill. Rest should be self evident. 
]

...................................

"Lair
right is the right of the mother. From all of her years she may claim
One
haunch of each kill for her litter, and none may deny her the
same."

[`all of her years`: I think years refer to children
older than one year - i.e. adults in wolf
terms. 

Essentially this defines mothers claim on a portion
of all her adult children's earnings.]

"Cub right is the
right of the yearling. From all of his pack he may claim
Full gorge
when the killer has eaten; and none may refuse him the
same."

[`yearling`: Cubs younger than 1 year. Children in
wolf term.]

"Cave right is the right of the father, to hunt
by himself for his own;
He is freed from all calls to the pack. He is judged
by the council alone."
 
Because of his age and his cunning, because
of his gripe and his paw,
In all that the law leaveth open the word of the
head wolf is law.
 
Now these are the laws of the jungle, and many
and mighty are they;
But the head and the hoof of the law and the haunch and
the hump is—Obey!"

[Not clear of the last line - other than
"Obey". Rest have more or less literal meaning.]