There are a few key differences between American and German Shepherd bloodlines. The most notable difference is in the overall size of the dogs. German Shepherds are typically larger than their American counterparts. This is due to the fact that German Shepherds were originally bred for military and police work, while American Shepherds were bred for herding and ranching.
Another key difference is in the temperament of the two types of Shepherds. German blood line is known for being highly trainable and obedient, while American Shepherds are more independent and headstrong. This again is likely due to the different purposes for which these dogs were originally bred.
So, which type of Shepherd is better? Ultimately, it depends on what you’re looking for in a dog. If you want a large, trainable, and obedient dog, then a German blood line is probably your best bet. However, if you’re looking for a smaller dog with a bit more personality, then an American Shepherd might be a better choice.