This is his way to heal himself or at least to revitalize whatever lethargy that the dog is suffering from. The plant will later be vomited and after a while, the dog will start feeling better. This is not only true to dogs; all animals do this as well. It is nature's way of healing ailments. When there is nothing wrong with the dog, the dog may just be developing shyness. To prevent this, do not play games with the dog that will teach him to challenge you. Roughhouse and tug of war are some of the most popular examples. When the dog starts to nip, it is a signal that the dog have had enough, let the dog rest and do not allow another occasion to reach that point as it also teaches the dog to become dominant. In fact, talk yourself out of it and see if that changes your opinion. Remember, dog adoption is not something you can take very lightly. It is a major decision as it does not only affect you, it affects the life of the dog you are about to bring home. Is it the best time for you to adopt a dog? Maybe you are a die-hard dog lover. This has not been shed off even through centuries of domestication. As such dogs practice hierarchy. Larger dogs often occupy and have the alpha male attitude and will bully any new pet that is added to their group. When decided to adding a new puppy, be sure to watch out that this does not happen. - Do not adopt a new dog without the agreement of all members of the family. Another danger to negative reinforcement is that once the dog owner starts using pain as a deterrent for bad behavior, the temptation to resort to harm often gets stronger especially when the dog refuses as dogs do from time to time. It also makes the dog more melancholic and lethargic. There are different dog type and breeds. Length: to determine the shortest length for a doghouse, add one and one half foot from the length of the dog starting from the tip of the nose to its rump. Width: to decide the narrowest width of the doghouse that would provide enough space for the dog to move around, add one foot to the length of the dog, this is the narrowest space for your width.