When your pup licks you, it is usually to say “I love you,” or to seek out your attention. Also, you can taste pretty good; don’t forget we have nutrients and minerals in our skin, and plenty of sodium to boot. We’re basically a salty treat to dogs.
If the licking becomes too intense, training your dog to not do this can be done with basic training. The best way to go about this is to ignore your dog when it licks you and reward it with a treat when he stops. Oh and that myth about dogs’ saliva being cleaner than humans’? Just a myth.
Eating Poop
Yes, dogs can do this from time to time. It is extremely disgusting, but it is not that uncommon. When a dog starts eating its own or other dogs' feces (also called coprophagia), it usually comes down to one of two things; either it is a behavior that can be corrected through training, or it is a sign of malnutrition.
The best thing to do is to take your dog to the vet if it starts doing this too often. If your vet rules out any nutrient deficiency or medical reason, then it's time to go to a trainer to help your dog break the habit.
Chasing Their Tail
Tail-chasing, in most cases, is simply a sign of playfulness, but keep an eye out if your dog starts doing this excessively. It might mean there's a health or behavioral issue behind it; for example, if your dog chews at his tail when he catches it, then he might have skin allergies or anal glands that need to be emptied at the vet.
If your dog starts chasing its tail all the time and in an obsessive manner, it may be a sign of OCD. Yes, this affects animals, too. You're better off checking with your vet, just to be on the safe side.
When Dogs Hump
Humping is a very common and natural behavior in dogs. And contrary to what most people may think, it is not always sexual in nature, or a dominance thing, for that matter. Dogs can hump other dogs, objects, or people, and it is usually a playful activity for them. It does look quite funny, to be fair.
Unless the other dog is bothered by the humping, there's really no harm in them doing this. It's not really a problem unless it bothers the owner, and if the humping is with people, then you might want to break the habit for other people's sake.
Sniffing Other Dogs' Butts
This might be one of the most puzzling practices that dogs will do. After all, humans don't really do this like...ever. So what's the deal? You've surely heard the line, "Can you imagine if people greeted each other like that?", amongst your dog-owning friends when referring to dogs' butt-sniffing.
Well, there's obviously a reason behind this; since a dog's sense of smell is at least 10,000 better than a human's, they use their nose to learn about the world around them. Dogs learn about each other by sniffing each other's butts; they can learn about the other dog's gender, reproductive status, temperament, diet, and more.