I feel bad now.lol Diesel doesn't sleep with us. We have a rather large shepherd that sleeps with us. The 2 of them are buddies but I am still scared that someone will roll over on him. He is 8 months old and is only 4.5 pounds. So I went and bought a baby playpen. He sleeps in that at night with a puppy pad and his toys and a bed. He also stay in it when we go out. I am too scared of what might happen if he is left alone with the Shepherd. He has no fear of him and they are like long lost buddies. Shep would never hurt him except accidently while playing. So I figure why take the chance. I forgot to add that at night before we go to bed he snuggles with us in bed while watching some tv. He has this thing for going under the covers to sleep. So that is another reason I am scared to let him sleep with us.
Oh and as for the steps...

Diesel LOVES them. It didn't take him long to figure out what they were for. LOL It is so cute.
Consider yourself lucky. He is letting you share the bed! LOL