zero is now 6 month and he is perfectly fine when i leave him in his kennel. his is right next to sadies (our lab) but if i take her out for one second without him he freaks out! doesnt even give me time to try and praise him for being calm. he just cry barks untill she gets back. i dont know how to stop this, i can take him to work without her an go places alone, but if he knows im with her and not him he gets all barky, How should i stop this? jst let him deal with it and leave him alone more often?