Very brave letting the retic on the bed. I've already been peed on twice this year.
Reading this makes me wonder if I've been underfeeding my guy. He's a little over 4 feet as well but only getting one small. I've been thinking about feeding him 2 but didn't want to over do it. But seeing that you've been feeding Caesar 2 smalls no problem and they're about the same size I'll give it a try today. Do you know about how heavy the smalls you feed him are? I've small rats vary a lot in size from different rat breeders