This phrase refers to the spotty pattern on a leopard's coat. The characteristic spots are visible to others as part of the animal's appearance, yet he has no conscious control over their configuration. This concept is used metaphorically in literature to apply to people and their characteristics. If someone is known for a particular trait (say for example, they are mean with money or a boring conversationalist) then they may seek to change it. The phrase 'a leopard can't change his spots' is used to suggest that the person will not be successful in adapting their personality, because such inherent features are not subject to their conscious control.
It means that some people have an intrinsic nature - for example, some people are habitual liars - and they cannot change this behaviour no matter how much they pretend.
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If you mean to ask: "Is the catahoula the state dog of Louisiana?", the answer would be yes. They are also known as Catahoula Leopard Dogs.
If you mean can it be patched, of course it can but the fabric is weaker than it would be if it had not been bleached. If you mean - can it color be restored - not really. You can dye the fabric, but it will always have lighter spots.
Change
While change occurs over time , there is continuity to the stucture of a society.
by pleasing one person you can upset another.