Rights: Public domain. Published 1 February 2010, Updated 16 February 2018 Size: 5.6 MB

The selection of particular traits - or selective breeding - is how people have bred dogs for specific purposes. For example the 'sausage dog' - or dachshund were said to have been bred specifically for hunting badgers - their short, long body suited to entering badger holes.

IMAGE: Working dog breeds from The New Student’s Reference Work published in 1914.