'Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds' is the well - known USPS motto. Though it doesn't include attacking dogs, postal carriers still have to complete their rounds even when dogs make it difficult.

The USPS released its list of cities where postal carriers are most threatened by cantankerous canines. Click the link below to see how many Louisiana cities made the list and which cities in the US have the highest instances of attacks.

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