jammed in between the mattress and frame.
check the rung width to make sure they can not get their little head stuck in between. [ 2 3/8 inches or about the size of a soda can ] any toy attachments should be firmly mounted. babies can have amazing little spurts of energy. how sturdy is the crib? give it a good shake if possible or when you get it set up at home. most mothers and parents purchase their baby's crib before they are born. months in advance. this gives you the chance to fully inspect your baby crib for any issues.
if not happy, return it or exchange it. other things 