Hi i recently became the owner of a male 7 month old male german shepherd i also own 3 border terriers 2 femal?

dont leave them unsupervised for long periods also the licking the German shepard is doing believe me he likes you're border terrier. The new dog is the new kid on the block as the say. you're border terriers are asserting their authority as he is only a puppy. my best advice is to leave them alone to get on with it its all normal behavior when you have a new dog. unless it gets out of hand and you need to be a bit firmer with them all. dont worry to much i am sure they will be fine.