What is a bully breed dog?

im looking to adopt a dog and it says i have a fence for a bully breed dogWhat is a bully breed dog?
There's no breed named "pit"
The correct name is " The American PitBull Terrier"
Unless it's a mutt

Bully Breeds
American PitBull Terrier
Boxer
Rotti
American Bull dog
English bulldog
Amstaff
Bull mastiff
Bull terriers

There is prop a few I forgot those were on the top of my head
http://animal.discovery.com/petsource/bu鈥?/a>

The definition can vary widely...including breeds like the Boxer, American Staffordshire Terrier, Staffordshire Bull Terrier, American Pit Bull Terrier...and then down to the French Bulldog, Bulldog, and Boston Terrier. They descend from the same ancestor...some were then bred for "bull baiting" and then fighting...then were bred down to family companions.

The place you are adopting probably just means that you must have a secure fence. These dogs are stubborn, determined, and strong...the average Boxer could easily jump a fence...the average American Staffordshire Terrier could bust through a weak fence.

ADD:
a "pit" or "pitbull" isn't even a dog breed
there is an American Pit Bull Terrier...then other backyard breeder junk that stem from this poorly understood breed
the "pitbull" is a termed used by ignorant people who don't research and by the mediaWhat is a bully breed dog?
Bully breeds can be: American Pit Bull Terriers "Pit Bulls," American Staffordshire Terriers, Staffordshire Bull Terrier, or any mix thereof. I personally consider the American Bulldog a Bully breed.
A bully breed is an American Staffordshire Terrier.
http://animal.discovery.com/petsource/bully-breeds/

I think everyone has their own definition of a "bully breed". Some people refer to the Boxer as a bully breed.What is a bully breed dog?
American Bulldog, American Pit Bull Terrier, Bulldog, American Staffordshire Terrier, Bull Terrier, Staffordshire Bull Terrier... Gah, there are so many of them. Pretty much any "block headed", muscular breed.
'Bully' refers to breeds that were developed from bull dogs. The more common "bully breeds" are ABPT, AmStaff, Staffie, Bull Terrier, American Bulldog, and Bulldog.
any of the bull dog types

boxer

pit

old english

mastiff

stafford terrier
pit
Pit Bull

Bulldog
Terriers, I was dog sitting 2 of them and the were alwayse barking at my gOlden retriever and scaring him away.

little ceasers