Beagles are fun-loving, gentle, and playful creatures. They are lively, sociable, and also get along well with children. As they were previously used as hunting dogs, they have hunting instincts. These dogs are known to be very determined and require proper training, in order to soften them up. An untrained beagle has an immediate instinct to fight, when it comes in contact with other dogs. But, a trained one can adapt well to outdoor as well as indoor environment. A beagle has a loud and baying cry. It is also found to be susceptible to heart and vision disorders.