There is no such thing as justice or injustice among those beasts that cannot make agreements not to injure or be injured. This is also true of those tribes that are unable or unwilling to make agreements not to injure or be injured.
EpicurusThe wise man neither rejects life nor fears death... just as he does not necessarily choose the largest amount of food, but, rather, the pleasantest food, so he prefers not the longest time, but the most pleasant.
Epicurus