Medium coat, red merle Koolie is an Australian dog breed. The Koolie is a working or herding dog which has existed in Australia since the early 19th century when it was bred from imported British working dogs.
Medium sized dogs are a great choice If a big dog is just too big and the little dogs are just too small for you, then you may want to consider getting one. English shepherd- http://encyclopediaofdogbreeds.com/medium-dog-breeds/
Nova Scotia Duck Tolling Retriever - very smart, trainable, medium-sized dog with a hardy winter coat for rough weather conditions. Mt. Hood Meadows is training their new pup as an avalanche search and rescue guide.
Staffordshire Bull Terrier is a medium sized English dog breed.Staffordshire Terriers are loyal,intelligent and fearless dogs.Stafforshire Bull Terriers with their loving and cheerful personalities are ranked as 2nd best dog breed for people suffering from anxiety.
Vizsla is a medium sized dog breed native to Hungry.Vizsla dogs are known for their loyalty and companionship.They are affectionate dogs who get along well with kids.Vizsla is ranked as 2nd best dog breed for kids.