Lap dog children and other dog breeds. However, if properly managed by a dedicated owner, the Chihuahua can adapt to a household environment easily. Pomeranians are the fluffiest of the lap dogs, have a double coat and tend to be a friendly, one-person dog. The Pomeranian is named after the Pomerania region in Central Europe, split between Germany and Poland. The Miniature Pinscher, min pin for short, is a small breed of dog originating from Germany. The breed's earliest ancestors may have included the German Pinscher mixed with Italian greyhounds and dachshunds. Shih Tzu (singular and plural) is one of oldest breeds
Dog breed studies have reported lifespans that are shorter by between one and almost two years. Notably, dog breeds with flat faces and short noses have breathing difficulties, eye trouble and other health issues. The Fédération Cynologique Internationale recognizes over 300 dog breeds. A dog crossbreed is the result of mating two different breeds. A mongrel, mixed-breed dog or mutt is a dog that does not belong to one officially recognized breed and is not the result of intentional breeding. Natural breeds rose through time in response to a particular environment and in isolation from other populations of the species. This environment