Whats the biggest dog you could get in the intermediate do you think? We're looking at getting 4 but I'd like them to be the same size so we can link them together.
I have two Shorthairs, one is 54 lbs and 24" the other is 66 lbs and is 26.5". I bought two larges to be consistent and they work just fine. The smaller dog would be fine in an intermediate. The larger dog would probably be ok but would be a bit cramped IMO because of his height.
My 62# male does fine in the intermediate.
Off season I have them on the porch with the doors off.
That's where he sleeps during the day.
My female is 52# and she has lots of room.