Hi, we kept Storm downstairs as a pup and because we were so vigilant about no stairs found it quite a hinderance out on walks, at a friends house (who had steps down to their house) etc - so had to teach him steps at nearly a year old - we started off with a couple of steps out on a walk at the shops and built it up slowly, he was very nervous in the house about coming down (he managed to SAS crawl himself up ok due to the excitement of being allowed in the humans bedroom to sleep at last) but we had several mornings of "you grab the back half and I'll take the front" to get him down again - he's fine now though - but always careful - I'd say get Snorre in the habit asap and he'll be fine, as for new pups, my friend had a DH pup that always used the stairs from day one and his feet/legs are exactly like Storms - no apparent harm done and he's much more relaxed about stairs as a result.... Good Luck x