The Cairn Terrier is one of the oldest terrier breeds, originating in the Scottish Highlands and recognized as one of Scotland's earliest working dogs, used for hunting burrowing prey among the cairns.
Although the breed had existed long before, the name Cairn Terrier was a compromise suggestion after the breed was originally brought to official shows in the United Kingdom in 1909 under the name Short-haired Skye terriers. This name was not acceptable to The Kennel Club due to opposition from Skye Terrier breeders and the name Cairn Terrier was suggested as an alternative. The Cairn Terrier quickly became popular and has remained so ever since.(Wikipedia)
Cairn Terriers are intelligent, lively, strong, and loyal. Like most terriers, they love to dig after real or imagined prey. Cairn Terriers have a strong prey instinct and will need comprehensive training. However, they are reasonably intelligent and, although willful, can be trained. Although it is often said that they are disobedient, this is not the case provided correct training is applied.
Cairns are working dogs and are still used as such in parts of Scotland. Cairn Terriers generally adapt well to children and are suitable family dogs.(Wikipedia)