ok so i handle my baby ball once a week...about 48 hours after feeding...the other 2 i have only handled twice when i brought them home and when i moved them in to their new tubs.....one seams stressed and the other...i just get an aggressive vib from him....now i am an inexperinced handler...so i have one question....what is the best way to actualy hold them?......and where is the most likly place to get bit?