The statement is probably true if you have a well socialized senior dog. The problem is, you don't. If there is any concern at all about him possibly hurting the puppy (vs just ignoring him) then it's in everyone's best interest to cough up the money and get a trainer in to your house ASAP. Allowing him to continue to be agressive towards the pup puts stress on his body (and health) and could end up causing behavioral/fear issues with the puppy.
Never leave them alone for a second. Even putting the puppy in a crate isn't protecting him- I've seen dogs bite and injure each other through cages.
Going for walks could help- but chances are since this is a pet store puppy, he's too young to have completed his full set of immunizations- so it's not safe for him to be outside yet.
__________________  Don't get your knickers in a knot. Nothing is solved and it just makes you walk funny. |