A puggle is a hybrid, and comes from breeding a pug and a beagle.
Puggles are believed to have been bred originally in the U.S. around 30 years ago. They are now the most popular of all the hybrid dogs, due to their looks, versitility and intelligence amongst many other traits.
A second generation puggle is a result of breeding a first generation puggle to another first generation puggle. These are known as F2 puggles. The F2 tends to be chunkier and have more wrinkle than the F1and the litters have much more colour variation.