A person who spends the first few years of his or her life in a maladaptive (physically or emotionally painful) environment organizes his / her brain in a maladaptive style of survival behavior. (instituteforattachment.ong)
So, they will be more intensive with doing «dog» behaviors, and will be more acting on pre-programmed survival behaviors instead of on training. (samthedogtrainer.com)
In his Handbook of Applied Dog Behavior and Training, animal behaviorist Steven R. Lindsay says, that coprophagia «may be one of several appetitive survival behaviors that have evolved to cope with the periodic adversity of starvation.» (akc.org)