Why would a mother cat move only 1 of 2 babies and leave the other behind? I have built a 4X4` cage in the garage and thought I`d let mom out for a bit(she had them on Friday) and she moved just one back behind a big wall unit and stayed there with it. The other was left in the cage. We finally got her and the baby out. There is only about a foot of room behind it and I was afraid if she left just that one back there, we wouldnt be able to get to it(the wall unit is 10` long.and weighs about 300 lbs.) Any thoughts as to why she would only take one with her?