To give you a better answer, could you tell me what kind of terrier you're interested in? For example, are you looking for:
* A specific breed: like a Yorkshire Terrier, Jack Russell Terrier, or Airedale Terrier?
* A terrier with specific traits: like a small terrier, a terrier good with kids, or a terrier for hunting?
Once I have more information, I can give you a more accurate and helpful answer.