What is a common behavior issue in Jack Russell Terriers?

Jack Russell Terriers are known for their high energy and lively demeanor, which can often manifest as excessive barking or digging. This breed was initially developed for hunting and has a strong instinct to chase, dig, and bark, especially when stimulated or bored. Such behaviors are common because they seek to express their energy and engage their instincts. Proper training, socialization, and adequate physical and mental stimulation can significantly help manage these behaviors, but they remain prevalent in many Jack Russell Terriers.

The other behaviors listed, while they can occur in some dogs, are not as characteristically associated with the Jack Russell breed. Laziness or inactivity is contrary to their energetic nature, excessive chewing of furniture is more often a result of boredom or lack of training rather than a breed trait, and fearfulness of loud noises varies widely among individual dogs rather than being a common behavior of the breed as a whole.