I have a 12 yr old Beagle who is a very sweet and kind guy. Got a Schnoodle puppy who is now starting to bark and whine when he is playing. His back/whine is very high pitched. Problem is with the beagle. He starts to cower and run away when the puppy is barking/whining in that high pitch. Scooby(the beagle) goes right to the door with his tail between his legs and runs outside. I have tried to have a fun play voice with the puppy to let Scooby know it is okay, but no luck. Any advice? I don't want Scooby to be afraid to be in the house or around the puppy.