Australian Shepherd

Fluffy!! Super cute and very pretty, don't you agree? I have a 3--almost 4--month old Aussie puppy in one of my classes. She has a red merle coat and is super super sweet. Aussie's also come in other colors.

I've seen this coloring more often. Here's an excerpt from dogbreedinfo.com:

"The Aussie, as it is known, is a medium-sized, robust, well-balanced, rustic dog. The ears are set high at the side of the head, triangular and slightly rounded at the tip. The coat is of medium texture, straight to slightly wavy, weather resistant, of moderate length with an undercoat...Australian Shepherds are easy-going, remaining puppy-like even in their adult years. This courageous dog makes a good watchdog for the home. Aussies are excellent with children, even with an active child, as they love to play. A devoted, loyal friend and guardian, for they are naturally protective. Affectionate, very lively, agile and attentive - they are eager to please, with a sixth sense about what the owner wants. Australian Shepherds are highly intelligent and easy to train. Though aggressive when at work with livestock, the Aussie is gentle with human friends. Australian Shepherds are not the kind of dog to lay around the living room all day or live happily in the backyard with only a 15 minute walk...Working lines may be too energetic for people who only have a moderately active lifestyle...
Height: Male 20-23 inches (52-58cm.) Female 18-21 inches (46-53cm.)
Weight: Male 50-65 pounds (25-29 kg) Female 40-55 pounds (18-25 kg.)"
http://www.dogbreedinfo.com/australianshepherd.htm

Good for people that are active and like exercise and has a backyard. Not so much for the people that have small apartments and don't like to take long walks. As it mentions above, VERY trainable, but you do have to keep it occupied or else the puppy will go find its own fun which is no fun for you. They do have a tendency to herd, so it's very important to teach them that humans (and other dogs) are not ok for herding.