Rescue groups are, in general, the best sources for dogs that are good for adoption. These keep tabs of their dogs' history and the dogs' previous owners. So if you are interested in knowing the conditions from where the dog you are planning to adopt came from, a rescue group is the best place for you to begin your search. In fact, dogs enjoy hierarchy; it wants to know who the boss is. It is its tendency that is natural to dogs. Dogs trained in obedience are not only much more enjoyable as companions; dogs also are less likely to suffer and are loved more when it knows its limits. While mans love affair with dogs are many centuries old, dogs originally were predators in the wild. As times changed, so did their duties and purpose. There is no definite category for these dog breeds except that over the years their function were deemed less important than the general value that they serve whether as pets, entertainers, companions, guardians etc. Generally these dogs have good appearance but because there is no particular breeding for purpose, non-sporting dogs are now what we may call an all-purpose dog that shares all the positive features found in all dog breeds but may have no particular outstanding trait. Outside of marriage, adopting a dog is your only chance to choose a family member. Because of our strong attachment to dogs, it is not enough to have just another dog. It is too easy to fall into that kind of trap. It is so easy to fall in love with a puppy that is giving you its puppy eyes and begging for adoption. As middle range dogs, they tend to get along with all sorts of training, environment, and people. Although, these benefits do not apply to all mid-sized dogs. Giant dogs, big as they are, are perfect for people who have the space, budget, and patience for big animals. They require more food, more supplies, more space, and more intensive training. Source Of The Dog There are, in general, three places from where you can adopt a dog from an animal shelter, from a breed-specific rescue group, and from general rescue group. Animal shelters often serve as temporary shelters for dogs that were rescued from the streets. Rescue groups, meanwhile, house dogs in home-like settings where the dogs are observed and taken care of.