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> Can you identify a friendly or sick or lazy dog just by looking? No.

Yes you can do that. To put it extremely simply: define what "friendly", "sick", and "lazy" means in terms of behavior, then observe the dog's behaviors.



A sleeping dog still possesses those characteristics, but has no behaviors.


A dog sleeping amidst lots of stimuli known to excite dogs is exhibiting a lazy, sick or perhaps even unfriendly behavior.

Edit: sleeping is a behavior.


You can say exactly the same thing about a person, which seems to support my point.


I must have misunderstood, upon second read you seem to say something similar to, "nothing is as it appears" no?


Mmm, I think I was going for "lots of things cannot be understood completely by appearance, it is not unique to humans"




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