runts or dwarfs

[Michael & Sharon Fazi]

Hello.  It has been awhile since I signed off.  I changed ISP and have been having some difficulties as this ISP is new to this area.  What happened to the littlest gerbils?  Why are they so little?  I have seen two such gerbils.  I have not had any in my breeding and am curious as to what contributed to them being so little.  Are they just runts from lack of nutrition or are they dwarfs?  Are they fertile or sterile or just not breedable because of their small size.  I have heard of dwarf hamsters, but not dwarf gerbils.  Also, I had an individual ask me if I bred long haired gerbils or rex coated gerbils.  I said I had never heard of such in gerbils.  What kind of mutations or anomolies happen in gerbils?  Has anyone had such things in their breedings? Sharon