Lucky is doing awesome! I have bought a large, 3 story cage for him that I cleaned, put together, and put him him as of last night. He ran laps, up and down the stairs for about 3 hours before he curled up and passed out lol. This rat is so damn lucky...he should have been long pooped out by now, yet he's living the life of a king. Here's and updated picture of him, I'll snap a picture of his cage tomorrow. He has a soft hammock, a wheel, a play tunnel...all kinds of fun crap lol.
He looks really good! Nice and healthy and very cute!!! He sure has grown in the amount of time that you have had him.