Q. (Re- question 2669 above – I reside in a city without an eruv and I just acquired a small dog). If carrying the collar with the tags is permitted. can I also place the house key on the collar when I take him out, since the dog also requires it when we both come back home?
A. Horav Shlomo Miller’s opinion is that it is not allowed, since as explained on the prior question it is not a natural benefit to the dog, as it is for the owner.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit’a.