Glen of Imaal Terrier
The Glen of Imaal Terrier is a very rare dog breed: right now there are only a couple of hundreds of them registered in the USA. They reportedly originated during the times of Elizabeth I and are the least known of the Irish terriers. An interesting fact is that, according to DNA analysis, the Glen of Imaal Terrier is more closely related to the Molossers (bulldog/mastiff/boxer type dogs) than to other terriers.
Like all terriers, Glens are energetic, stubborn and fearless. Unlike most terriers, they are not barkers. They are intelligent and learn fast, especially if led by a firm hand. Glens are good with people, although may be aggressive towards other dogs. A known health problem is progressive retinal atrophy, a condition that gradually results in blindness.