Dog sometimes do not listen to owners maybe because the owner works alot or goes to school a dog park is a place where dogs and owner can spend time togther, bond and build a strong relationship. Some Dogs just need attention so they act out dog parks would help with that giving dogs one on one time with their owner. Also training a dog would require open space to give the dog a sence of comfort. Also trainning a dog around other dogs would help teach them to listen even when around other