There are owners who seek to put their dogs to use according to the dog's activity or training. Some are made into therapy dogs, others as guide dogs. If you are considering a dog for specific purposes, you are advised to pick ones that have undergone special training or, in general, have the traits suitable for the function. 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. In fact, there are as many dog-training methods as there are dog trainers. Each will not agree on training approaches and specifics. Include the D I Y training that many dog owners do and the methods are multiplied. All dog-training methods, no matter the techniques used fall basically into two categories, the positive reinforcement, and the negative reinforcement. Belly - Puppies are often potbellied when their tummies are full. A puppy that has a swollen belly is a good indication that it is harboring worms. Chronic sickness - Be warned with puppies that have chronic sickness. No amount of medical attention can help if the puppy is chronically sick. Also, a sick puppy often grows with major health problems into adulthood. The Pyrenean Mountain Dog Fearless, fiercely loyal and obedient, the Pyrenean will sacrifice itself for the family if needed. The Rottweiler Large, black, very powerful, reliable, and self-assured, the Rott is among the list of most popular guard dogs. Because of its size, this dog has to be trained and socialized early on due to its assertive character. They know better than to bark at everything or jump at people, and they have, more or less, curbed their aggressive tendencies. To top these off, they also have the skills to adapt to your routine and lifestyle. Adopted senior dogs seem to understand that they have been given another chance at a good life.