"Mill dogs" refers to dogs that are bred in puppy mills. Puppy mills are commercial facilities where dogs are bred in large numbers, often in poor conditions, and purely for profit.
Mill dogs are often mistreated, neglected, and kept in overcrowded and unsanitary conditions. These dogs are typically used for continuous breeding without proper care or consideration for their well-being. The phrase
"mill dogs" is used to describe these unfortunate dogs that suffer due to the unethical breeding practices in puppy mills.
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