Here are some frequently asked questions with answers excerpted from the
United States Australian Shepherd Association.
What Are The Breed Characteristics Of Australian Shepherds?

Australian Shepherds were developed to herd livestock and work as
all-purpose farm and ranch dogs.  While many Aussies continue to work as
stock dogs, the breed has earned recognition in a variety of other roles
because of their high intelligence, train ability and eagerness to please.    
Australian Shepherds also work as Search and Rescue dogs, guide dogs for
the blind, therapy and hearing ear dogs, and drug detection dogs.  They
have become highly regarded for their skills in the competitive sports of
obedience , agility, and fly ball.   And, most of all they are beloved family
companions

What Is The Temperament Of Australian Shepherds?

Aussies are "people" dogs that thrive on human companionship.  They have
an intense need to be near their owners, following them from room to room
when indoors and staying close by their heels when outdoors.  Because of
this trait, your Aussie will be happiest when kept in the house as a member
of your family.  Dogs kept in kennels or fenced yards need a significant
amount of "people" time each day in order to remain emotionally healthy.  
Isolation from humans can quickly ruin an Aussie's personality.

Australian Shepherds that have been properly socialized and trained are
ideal family dogs.  They are gentle guardians of small children and
enthusiastic playmates of older children and adults.  However, Aussies are
typically reserved with strangers and can be quite protective of their family
and property.,   Taking your dog to training classes and introducing him to a
wide variety of people and places will help him develop appropriate social
behaviors.

Care For My New Australian Shepherd

Most Aussies are energetic dogs that require vigorous  daily exercise to
keep them healthy and happy.   Running, playing with another dog, retrieving
a ball or Frisbee, swimming or participating in other activities are some ways
your dog can get the exercise he needs.   If exercise is not provided on a
daily basis, your dog may bark or become destructive out of frustration.      

Grooming My New Australian Shepherd

A healthy Australian Shepherd coat sheds dirt and does not require a great
deal of maintenance.  Weekly brushing down to the skin with a pin brush will
eliminate mats and tangles and remove dander and dust.  A slicker brush will
help remove undercoat during the shedding season.