lore¹ (lɔr, loʊr)

n.

1. the body of knowledge, esp. of a traditional, anecdotal, or popular nature, on a particular subject: nature lore; local lore.

2. learning, knowledge, or erudition.

3. Archaic.

a. the process or act of teaching; instruction.

b. something that is taught; lesson.

 

 

law of the jungle

noun

1.

a state of ruthless competition or self-interest

a code that dictates survival by any means possible, and that is presumed to be in effect among animals in their natural state, or people unrestrained by any established law or civilized personal or civic control. 
 

(Wikipedia)  "The law of the jungle" is an expression that means "every man for himself," "anything goes," "might makes right," "survival of the strongest," "survival of the fittest," "kill or be killed," "dog eat dog" and "eat or be eaten,". The Oxford English Dictionary,^[1] defines the Law of the Jungle as "the code of survival in jungle life, now usually with reference to the superiority of brute force or self-interest in the struggle for survival."

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 'THE CITY IS NOT A CONCRETE JUNGLE-
IT IS AN URBAN ZOO.'

DESMOND MORRIS.