Yes. All domestic dogs and wolves are of the same species and genetically (and in most cases physically) can breed with all other dogs and wolves to produce fertile offspring. Due to selective breeding over at least ten thousand years the dog species is one of the most (if not the most) diverse species of any animal.
A bulldog is a dog and can mate a dog to produce offspring .
another bulldog.
a sheep dog
If you are talking about the pet dogs such as bulldog or sheepdog they can never attack.
Bulldogs can't mate with chihuahuas due to the huge difference in size. The bulldog certainly would kill the little dog during intercourse.
No American Kennal Club says Doberman's do not cope with other dogs.
Sheepdog David Grant goes by Sheepdog.
Rotti or Bulldog Many breeds could be considered "tough". There are thousands of sled dogs that run four or five thousand miles a season. It takes an exceptionally tough dog to be able to be that athletic.
Sheepdog Glory was created in 1956.
Sheepdog of the Hills was created in 1941.
Yes, this is possible, but the Bulldog would likely need human assistance as they have lost most of their capability to mate independently. Matings between two Bulldogs need humans on hand because the Bulldog breed can no longer mate without assistance, nor give birth without a caesarian. These problems may be present in a mating with a Basset Hound.
I have a Belgian Sheepdog Mix and he sheds.... A LOT! :)