As a dog owner, you will be very likely used to your dog greeting you when you walk into a room or house, not just with a wagging tail and a wet nose, but you might also receive a lick to the hands. And for some, they might even greet dogs by putting out their hand for a lick! Many owners accept this behaviour as a normal dog greeting, but you might be wondering, why dogs lick and especially why do they lick your hands?
If you’re wondering why dogs lick, you’ll not be surprised. Dog licking is a natural behavior rooted in biology, communication, and learned habits. Understanding why dogs lick your hands can help you better interpret your dog’s emotions and decide whether to encourage or redirect the behavior.
Dogs obviously communicate in a different way than humans, not using words; they rely on actions and body language to communicate with their owners, other dogs, and even other pets. And a dog, licking can be one way of communicating. And so communication is one of the reasons why dogs lick. When a dog licks your hand, they may be communicating friendliness, respect, or submission.
And you can see how dogs learn this behavior when you see puppies lick their mother’s mouth to signal hunger and to show submission. As dogs grow older, they then carry on this instinct to communicate in this way to their owners when they see you as their pack leader and caregiver. When a dog licks your hand, they’re generally saying, "I'm friendly, I trust you, and I’m happy to see you.”
Dogs have a very different way of assessing the world and everything around them. Dogs have an amazing sense of smell, much better than humans, and from a dog’s perspective, your hands are incredibly interesting! They carry smells from everything you’ve touched throughout the day, this might be food, other people, other dogs, animals, or even unfamiliar places. Dogs experience the world largely through scent, and licking helps them gather more information.
This is one key reason why dogs lick your hands right after you come home. Your dog may simply be “reading” where you’ve been and what you’ve encountered, and some dogs are especially interested if you’ve stroked another dog! And for some dogs, if you have recently handled food, that could also be an occasion for why dogs lick!
As we mentioned, puppies and their mothers lick each other, and if you’re a dog breeder you will be very aware of this. It’s one of the first ways that puppies learn how to receive and show affection. And as they grow up, one of the reasons why dogs lick is that they still see it as a way to show love. Just as humans hug or shake hands, dogs lick as a way to bond with other dogs, pets, and their owners. When your dog licks your hands, they may be expressing comfort and emotional connection.
Dogs lick their owners when they are closely bonded to them. The act of licking releases endorphins, and this helps your beloved pooch feel calm and secure. For some dogs, licking their favorite person is genuinely soothing and relaxing and makes them happy. And it's a way for owners to know how much their dog loves them, too!
Puppies lick instinctively, and young puppies lick adult dogs. While pet dogs don’t rely on this behavior for feeding, the instinct often remains. And as puppies grow into adults, licking can shift from a survival behavior to a social one. This explains why even well-trained adult dogs may still lick hands as part of their greeting routine. And if licking your hands as an adult dog provides positive reinforcement in the form of attention, like laughter, petting, or verbal responses, they quickly learn that the behavior works and will continue.
Even negative reactions, such as pushing the dog away or saying “no,” can still be interpreted as attention, and it still becomes a learned behaviour. And the dog continues to lick as a way of greeting because, over time, dogs may associate licking with positive outcomes and continue the behavior simply because it has been rewarded in the past.
Sometimes, dogs lick when they feel overstimulated, nervous, or unsure; it’s not always due to affection. We can all think of a time when we’ve been away longer than normal from our dog, perhaps on holiday or for a business meeting, and the excitement and licking from your dog can be way more than normal! You can definitely tell when your dog has missed you. Greeting moments can be emotionally intense, especially if you’ve been away for some time.
In these situations, licking may function as a calming mechanism. Dogs use repetitive behaviors, like licking, to self-soothe and release tension. If your dog’s licking seems frantic or excessive, it may be a sign that they are feeling overwhelmed rather than affectionate. Sometimes dogs can lick excessively when they are nervous, perhaps they’re meeting a new person or going to a new home, but it should settle down. If it continues, you can consult a certified dog behaviour specialist or your local veterinarian.
There are many reasons why dogs lick, and especially why dogs lick hands. It can be a way to communicate affection and respect for their owner, it’s a way of rhythm to find out about the world, what you might have cooked, or where you have been. It is a behavior that dogs learn from birth, and if it is encouraged, it becomes a behavior that they have learned as an acceptable means of communication through to adulthood. A hand lick to a dog is a friendly and meaningful way to connect with their humans.
By understanding the reasons behind this behavior, you can better respond to your dog’s needs, strengthen your bond, and decide what works best for both of you. Some owners might want to discourage this way of greeting, especially if guests often aren't keen, but many dog owners are happy to accept a hand lick and acknowledge it as just their way of greeting. But learning why dogs lick is the key to a happy, healthy relationship with your beloved dog.
09 March, 2026