When we first brought Bodie home, he was only eight weeks old and his crate was one of the cat crates I had. After a few weeks, we moved him up to a Sheltie crate. At first, it was huge but lately he hasn't been able to turn around in it easily. So just recently we moved him up to the big boy crate. It should definitely work even if he gets up to around 90lbs (as predicted). We left the Sheltie crate in the living room, awaiting storage in the shed. But we might wait awhile - Bodie loves that crate! He goes into it several times a day, and when it is time to go to bed he goes into it first before going into the new one in the bedroom. I don't think this will last for long as he will no longer be able to fit in it at all!