The Cardigan Welsh Corgi is descended from the same family of dogs that produced the Dachshund and the Basset Hound. The ancestors of modern-day Cardis are believed to have been brought to Wales more than 3,000 years ago by Celtic tribes who migrated to Wales from central Europe. This early dog was a transitional form between the Teckel and the Spitz families. Some believe that when the Vikings invaded Wales, the Spitz-type dogs they brought with them were crossed with the original Corgi to produce the Pembroke Welsh Corgi.