Hide inside mommy's mouth"
When faced with danger or other such situations like these, many yukkuri will hide their children in their mouths. As soon as the children enter their mother's mouth, their survival rate falls to zero. The reason being, if they do survive the danger, the mother will forget she has her young one inside her mouth and will think "This is a reward for protecting my child". This is one sad fact of yukkuri nature; they can only remember one thing at a time.