Hi! Our 5 month old pup is losing teeth left and right. The last day or two, he's been salivating a lot, it's bloody from losing the teeth, he's licking and swallowing a lot, he had a little white foam on his upper lip today, his stool has been not normal and he was up all night last night. It seems like he's in discomfort? I can see a few teeth hanging on by a thread and others popping up so I'm hoping it's part of teething. I read it can make their stools unusual or give them a stomachache. Any advice? ?