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Dogs lick for various reasons. It could be a case of affection. This is why dogs do not lick strangers. It also depends on the dog's stage of development. Puppies are especially compulsive lickers. Dogs also lick surfaces for traces of food and tasty liquids. However, excessive licking could be as a result of hunger, thirst or a mineral deficiency like calcium. If you address this and fail to realise results, it could be a neurological problem and you should visit a vet with the pet.
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