If they are fast breathing, if their nose is
faint a little lusters or flaring, if when they breathe you can see how the ribs suck in under the rib or bottom of the neck or in between the ribs, if they are not peeing and their diapers are too dry, if they won't stop
crying, if they have ear pain or they
seem to be in pain, they are not consolable, I mean you try to console them and they will not console, if they are whizzing and if anything turns green.