This is my first litter that I handled the kits twice daily for the first 3 weeks. Mother didn't make a nest so I took the kits and placed them in a box. I kept the mother indoors and brought the kits to her every morning and night. I didn't leave the kits in the cage because my cat would reach in and get the kits. Kits are almost 4 weeks old now and are in the cage with mother. The last couple days all the kits are licking my hand and trying to bite. I know they are just trying to see if my hand is good to eat. If I continue to let them bite me will they grow up to be biters and unsuitable as pets?