The most common behavior issue I see is aggression. Below I've listed three major categories of dog aggression with a brief description. Fear Aggression. Simply stated, these dogs have learned and have been reinforced for using aggression as an offense-is-the-best-defense strategy for dealing with things that scare them.

Yes, dogs can have OCD (Obsessive Compulsive Disorder) that manifests as tail chasing, licking their paws until there is an injury (lick granuloma), fly snapping (biting at imaginary flies), flank and blanket sucking (literally sucking on their rear legs or on inanimate objects), pica (eating non-food items) and the list goes on.

I was recently taking a walk with my wife, Barbara, at one of our favorite parks. We came upon an older couple that was sitting on one of the park benches with their two beautiful German Shepherds. I asked if it would be okay for us to approach their dogs. The husband replied, "No. They are highly protective of us. You know how German Shepherds are."

Humans are incredibly resistant to letting go of long held beliefs - even when faced with evidence that should point us in a new direction. The following popular beliefs can get in the way of our relationship with our dogs and decrease our effectiveness when training them.

"My dog, Chester, tears things up when I'm away at work. Today it was the drapes! I know he's doing this to get back at me for leaving him alone all day. When I come home he looks guilty and cowers."

As a professional dog behavior specialist, I long ago made the decision not to use prong, choke or shock collars. Let me tell you how I reached that decision.

Men's Health magazine recently ran an article with some interesting facts about men and their dogs. Here a few of the more interesting. The percentage of men who don't have a dog, but wish they did is 88%.

As a dog trainer and behavior specialist, I'm frequently asked the following questions. "What do you think are the best breeds for a family dog?" Basset Hound - Friendly to people and pets - great with children too. Get one from rescue.

Below you'll find some old and familiar dog training terms that in recent years have become somewhat outdated in some circles. These old terms are candidates for an update in light of what we've learned in the last 20 years about dog behavior. Read the following and see what you think.

Puppy mills (also known as commercial breeders) see puppies more as "livestock" and breed them in large quantities and as economically as possible - an estimated 4 million every year in the US, which sadly equates to the number of dogs euthanized in US shelters annually.

Whether you love this TV series or take issue with its methods, I believe it has actually been a net plus for dogs with behavior issues. Why? It has brought attention to the fact that dogs can have behavioral issues that negatively impact the owner's and dog's quality of life - issues that can be addressed by qualified professionals.

I've received two notable dog bites in my dog training career:

I recently saw this bit of dog training wisdom on the Internet, "[When] dogs pull on a leash they are being aggressive... To stop this behavior...use a choke collar and every time the dog pulls..."

Dogs are primarily nonverbal communicators. They use their bodies to exchange information with their own species, and they attempt to do the same with humans. While not perfect, our increasing understanding of their communication methods makes it possible for us to better connect with them.

I’ve ranked 9 types of popular dog collars below starting with my least favorite (#9) and ending with my favorite (#1).

Is your dog Mr. Wonderful off-leash and a handful when on-leash? This seems counterintuitive. When your dog is connected to you by a leash, you would think his behavior would be better than when off-leash. Not always the case.