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The Jug is a hybrid dog obtained from crossing a Pug with a Jack Russell Terrier. They are considered a "designer" hybrid breed and have become steadily more popular over the last 10 years. Although the consensus is, currently, that they retain more of a Pug-like appearance, they actually can vary quite a bit in looks. Jugs are known for being outgoing, playful and loving, making excellent companions for those of all ages. If trained and socialized early, they get along very well with other pets. Members of this breed are low maintenance when it comes to grooming, training and exercise but are prone to "small dog syndrome" and separation anxiety if not given enough attention.