I myself try to improve the breed I love, Breed to only the healthiest, dogs tested, and most of all only those that have the temperment that fits the breed and a good home life. Some people see dogs as nothing but money, they breed the dogs as yound as 5 months, keep them in a cage a little larger than the dog, when pups are born they just throw away the dead, leave the rest. what ever lives they sell the rest they dump into a dead pit. After a dog starts to not have pups or small numbers they take them out and shoot them. They dont rehome them because thay dont want anyone knowing they are puppy mills, easier to just kill dog.
Mankind, although some dogs are not friendly towards some people most dogs get along with humans OTHER DOGS OF THE SAME BREED
Dogs are man's best friend. But it depends largely on the breed, cause an alsatian may bite it's owner too.
It varies depending on the breed, some dogs are large and some small
All dog breeds are good with people, but some dogs are better with children or large groups of people, than others. You need to evaluate an individual dog, and not assume that it will be great with all people, no matter the breed description. There are LOTS of dogs that do not follow their breed descriptions, due to poor breeding or poor socialization (or both). All dogs, no matter the breed, benefit from training from a young age.
some can and some cant
Well I heard that when the people breeded the dogs they looked on how the dog looked
Some dogs can be aggressive some are not it matters about the breed and the type of fight (who won)
Yes it is. Nothing will happen to the dogs. It will come out as a mixed breed and you will have some mutts. It is ok though because people are still willing to buy puppies for a good price.
There is only one "pitbull" breed and that is the American Pit Bull Terrier (APBT). These are lean and athletic dogs. Some people are trying to pass off big blue or big red dogs as things under the guise of "XXL Pitbulls" or "Bully Pit Bulls". These are mixed breed dogs and are not, in any way, pure bred pit bull dogs.
All dogs are dangerous, you just have to know how to train them to be kind, and how not to hurt people
People. People selected the dogs to breed and keep and which ones to kill.
No, not necessarily true, but mixed breed dogs do live longer than pure bred dogs