Our pup is 5 months old this week. He has been losing his teeth and I felt it was normal....yk, teething! About ten days ago they seemed to all come out at once! His front incisors birh top and bottom were first and the adult teeth are now in. Along his sides, everything from canines up to the back molars are gone. So he has thart large back molar but nothing else until his front teeth. Most of the new teeth have erupted except the ones that only came out in the last 2-3 days. So poor pup is sad and in pain, wants to play hut can't because it hurts to pick up toys etc. I figure it will pass in a couple of weeks, new teeth in, and so goes life. My husband was out wirh some colleagues last night, all of whom have dogs and have had several puppies. ALL of them said they had no idea puppies lose teeth!? That they've never seen a puppy with a tooth missing, never found a tooth out (I've found a couple around the house or garden!) and that it is not normal for a dog to lose teeth. I know they are wrong...that's not the question. But it did make us question if losing THAT MANY teeth all at once is a problem? Should he not have lost them all at the same time? if other people manage to not notice then obviously their pups are losing one at a time not a mouthful at once!