Jen it amazes me too that he and Stubby are brother and sister. I think Stubby was the runt and not real healthy. When they finally began to trust me enough that I could sit on the porch and they would stay nearby I could hear her wheezing alot. It was really bad during the heat of summer. When I finally got them in and put her in air conditioning it just stopped. She vet checked ok but I think she may have had some asthma.
She was always active but a little eater and she still is. A few bites and she is full. If I were to shave her I think the mice would laugh in her face she would be so small!!
Lucky, the other brother, is about normal size. Last vet trip he was about 12 lbs.
Peanut Butter never seemed sickly like the other two. I think he was healthy from the get go and just grew and grew and grew and GREW!!!