Bulldog
A Bulldog, also known as the English Bulldog or British Bulldog, is a medium-size breed of dog that originated in England. The bulldog is a stocky breed, with a compact body and short, sturdy limbs. Its shape results in a waddle-like gait. Bulldogs are known for their short muzzles and the saggy skin on their faces, creating the apparent "frown" that has become a trademark of the breed. Bulldogs come in a variety of colors and ideally have a smooth, short coat. The size for a mature male is about 50 pounds (25 kg); that for mature females is about 40 pounds (23.7 kg).

The temperament of the English Bulldog is generally docile, friendly and gregarious, but are known to be fiercely loyal and defensive and, because of their strength, could make good guard dogs. However most breeders have worked to breed aggression out of the breed. The English Bulldog is also very loyal and protective of its family and may exhibit aggression in a protective manner. Most bulldogs are so attached to home and family that they will not venture out of the yard without a human companion. Due to their friendly nature, bulldogs are known for getting along well with children, other breeds of dog, and any house-broken pet in general.
The bulldog is prone to some health problems, such as hip dysplasia and breathing problems. A bulldog is great for houses as well as apartments, but puppies may be destructive until they reach maturity. They are notorious for snoring, and while some adult bulldogs are considered "dry-mouths" and do not drool, wet-mouths drool extensively. Unfortunately, it is not possible to determine which mouth-type they will grow to be when they are at puppy age.
Like all dogs, Bulldogs require daily exercise. If not properly exercised the bulldog will gain weight, which could cause health problems. A properly exercised bulldog will exhibit a better temperament and will refrain from destructive behavior that results from boredom; however, bulldogs are extremely sensitive to heat. Bulldogs' sensitivity to extreme weather is a very important element to consider when purchasing a dog; They cannot handle extreme heat, humidity or cold. Due to their generally low energy levels, and their quiet nature (they rarely bark without cause) they make great apartment pets as well as household pets.