NOT coin was listed on multiple exchanges and not to forget it was listed on Binance. Another factor why NOT succeeded immensely was because the emphasis was more on holding the coins rather than selling them by the team behind it. DOGS has not come up with anything that suggests the users hold the coins rather than dump them. They might come up with something before the listing date, anyways free money is always great to have.
I think DOGS team will cooperate with some exchange to contain the dump by incentivizing staking, they allocated hefty amount of supply for Liquidity in their allocation data I think it can be for something like this even though i'm pretty unsure myself.
assuming they really did, it can somehow contain the dumping to be not that disastrous, but since DOGS team themselves like to give some task in their app, I guess there will be additional task which purpose gonna prevent people from outright dumping 100% of their allocation, however if there's no such thing the price might dump so deep it'll be worth investing maybe.