The Dumb Friends League has a history of service. For more than 100 years, we have sheltered and cared for lost, abandoned and abused pets. 

Thanks to wide community support, we offer programs that help both pets and people. 

We are proud to be the metro-Denver area’s local humane society. You are invited to visit our website and our two shelters to learn more about us.

Aggressive Behavior

Aggressive Behavior under 18 months

When puppies play with each other, they use their mouths. Therefore, puppies usually want to bite or “mouth” hands during play or when being petted.

Although feeding time is important, it’s also vital to include petting, talking and playing, in order to help your puppy build good “people-skills.”

Many behavior problems in dogs are the result of boredom or excess energy. Toys offer mental and physical stimulation and enrichment.

An aversive is something that your dog finds unpleasant. It can be used to discourage her from a particular action or place.

A training tether is a temporary management tool that can be used to prevent behavior problems or assist in resolving an existing problem.

Aggressive Behavior over 18 months

The word aggression can refer to a range of behaviors from barking and growling, snarling and snapping, to biting and attacking.  Threats of aggression are one way dogs have of communicating and are often displayed as a means of avoiding outright aggression.

We recommend that you keep your dog indoors, unless you’re present to supervise his time outside.

A head halter is a special kind of collar with a strap that goes around your dog’s nose and another strap that goes around his neck, just behind his ears.

Dogs may display a variety of behaviors when they are afraid. A frightened dog may try to escape, may show submissive behaviors, or he may freeze and remain immobile.

Positive reinforcement is the presentation of something pleasant or rewarding immediately following a behavior.

When you feel frustrated with your dog’s behavior, remember that someone must teach a dog what is acceptable behavior and what is not.

Knowing why dogs bite and what to do to keep yourself safe is important.

We are able to assist pet owners with many types of problems; however, there are some we can’t resolve by e-mail or phone.

Living with a dog can be beneficial to children. However, children and dogs may not always automatically start off with a wonderful relationship.

Animals that live in groups, like dogs, establish a social structure within the group called a dominance hierarchy.

Canine rivalry refers to conflicts between dogs living in the same household. Animals that live in social groups establish a social structure within that group.