From: HowStuffWorks on Tue, Sep 29 2009 5:55 PM

One dog explains how just a little bit of your time can make a big difference to shelter dogs.

From: HowStuffWorks on Tue, Sep 29 2009 5:54 PM

Hear what two dogs have to say about spaying and neutering.

From: HowStuffWorks on Tue, Sep 29 2009 5:47 PM

Collies were made popular in the United States by "Lassie" and other celebrity pets. See what makes them such wonderful companions in this clip from Animal Planet’s "Dogs 101" series.

From: HowStuffWorks on Tue, Sep 29 2009 5:47 PM

Chihuahuas are the smallest breed in the world and love to be pampered.

From: HowStuffWorks on Tue, Sep 29 2009 5:46 PM

Rottweilers are no nonsense creatures who need lots of attention and training. Why does this breed have a negative reputation?

From: HowStuffWorks on Tue, Sep 29 2009 5:46 PM

In addition to their size, Saint Bernards are renown for their sweet dispositions.

From: HowStuffWorks on Tue, Sep 29 2009 5:30 PM

While all dogs belong to the same species, each breed of dog has its own traits and personality. On Discovery Channel’s "A Dog's Life," learn how humans have bred 450 varieties of dogs.