Thank you , I never thought of them swallowing their teethBy seven months, most dogs have all their adult teeth at least erupted, and probably the only baby teeth they might have left are their canines. A lot of time, I think they swallow their baby teeth as the come loose while eating or chewing on something. If you are concerned, about it, talk to your vet about it. I know that some breeds have x-rays done to see if they have all their adult teeth.
The fangs in the front are what my Chua huia are left in the front but I don't know if they are his 2nd set or not his back ones are gone e still chews his toys and slippers ? ?They're also surprisingly tiny and easy to miss, vacuum up, have vanish between the couch cushions or in the yard, etc. I only ever found a few teeth from either of my boys, and while they're small dogs they're not toy breed small like a chihuahua. If you aren't seeing teeth that seem strange in his mouth - crowded, twisted, two trying to grow in the same space, and of course any signs of pain - I'd just assume that he's gotten his adult teeth in already. Your vet can confirm whether they're adult teeth of course, but unless you're seeing something worrying (my youngest had to get a puppy canine tooth removed that wasn't budging even though the adult tooth was mostly grown in, for example) it isn't something that needs its own appointment.
I sure hope they are his babies and they come out and he stops his chewing many thanks to you and others help..The canine teeth (aka fangs) are usually the last teeth to come in, and it's very common for the baby teeth to still be in as the adult teeth start coming in. Like DaySleepers said, as long as the adult teeth are straight, and not twisted or sticking out at weird angles, you can probably just keep an eye on them, and see if they are loose. Offering things to chew on (not slippers, though!) is good, and will help get them worked out. It wouldn't hurt to consult with your vet to see when they think the cutoff is for waiting it out before going in and pulling them.