My pygmy babies are only 2 days old both have been acting normal and healthy until today. One is just acting a little off. It's not very obvious but I noticed the difference. When I go into the pen the other jumps right up while the off one just lays there. When I pick it up and stand it up it acts ok just not quite right. But walks over and nurses. So I've been checking every hour or so the last time I checked a few mins ago when I picked it up there was a puddle of drool where it's head was laying and around her mouth was very wet. Is this a sign of something I should be worried about?