What does it mean if you put your hand in front of dog and starts licking all the time?

When a dog licks your hand, it can mean several things depending on the context and the dog's behavior. Here are a few possible interpretations:

Affection: Dogs often lick as a way to show affection and bonding. By licking your hand, the dog could be expressing its love and attachment to you.

Greeting: Dogs may lick your hand as a way of greeting you when you come home or enter a room. It's their way of welcoming you and saying hello.

Seeking Attention: Dogs sometimes lick as a way to get attention from their owners. If your dog licks your hand and you respond by petting or giving them attention, they may learn that licking is an effective way to get your focus.

Trying to Taste Something: Dogs have a strong sense of smell and taste, and sometimes they may lick your hand to try and taste something interesting or appealing on your skin or hands.

Relaxation: Licking can also be a calming or relaxing behavior for dogs. If your dog is licking your hand in a repetitive or consistent manner, it could be a self-soothing mechanism or a way for them to relieve stress.

Submissive Behavior: In some cases, licking can be a submissive gesture, where the dog is showing deference to a dominant individual. If your dog is licking your hand while cowering or showing other submissive behaviors, it may be a way of expressing their respect and acknowledging your authority.

Curiosity: Dogs are naturally curious creatures, and licking can be a way for them to explore their environment and learn about different things, including your hand.

It's important to consider the overall context of the dog's behavior, including their body language and other cues, to fully understand why they are licking your hand. If you're concerned about your dog's licking behavior, it's always a good idea to consult with a veterinarian or a qualified dog trainer for further advice and guidance.