Why Dogs Lick Your Arms. Exploration stage in puppies. Dogs have been licking since they were puppies and so licking your hand is a positive reminder of those early puppy days. In certain cases the licking behavior can be interpreted as a sign of affection. You Just Taste Good.
It might mean that your dog sees you as the head of the house or pack. Your pooch may be licking your arm to tell you they love you. When your dog cannot reach your face he may lick the closest body part which may be your hand arm or leg. Perhaps the easiest reason to explain why dogs lick is that you taste good to them. Many dog owners view dogs licking as a sign of affection similar to kissing. Obsessive licking may be a sign of underlying issues including anxiety boredom or fear.
In certain cases the licking behavior can be interpreted as a sign of affection.
I worked at a vet for a long time and have seen this plenty. A dog licking faces or other body parts can also occur as part of grooming. They learned it from the grooming and affection given to them as puppies by their mothers. Your dog might lick your hands and face because they love you. When dogs lick you their brains release endorphins or happiness hormones which calms them down and reassures them. This would be more likely if it does it more when you.