Which of the following is NOT a recognized breed in the terrier group?

The Corgi is not recognized as a breed in the terrier group because it is classified under the herding group. Corgis, specifically the Pembroke Welsh Corgi and the Cardigan Welsh Corgi, were originally bred for herding cattle and other livestock, which distinguishes them from terriers, which were developed primarily for hunting and ability to dig out burrowing animals.

In contrast, the West Highland White Terrier and the Airedale Terrier are breeds that belong to the terrier group, known for their energetic and tenacious nature. The Russell, specifically the Russell Terrier, is also recognized within the terrier group. This classification system helps dog owners and enthusiasts understand the characteristics and typical behaviors of different breeds, as well as their original purposes.