Veterinary clinics now host "puppy socialization classes" guided by behavioral science. These classes expose young animals to novel sights, sounds, textures, and foreign handling in a controlled, positive manner. Proper early socialization reduces the likelihood of developing neophobia (fear of the unknown), stranger aggression, and noise phobias later in life. Conclusion
: A sudden increase in aggression, hiding, or vocalization is often the first sign of underlying pain, such as arthritis, dental disease, or internal discomfort.
Every species has hardwired, evolutionary behaviors. A failure to provide outlets for these natural behaviors leads to chronic stress and behavioral disorders.