It appears to have been listed not long. I can see that the 24 hrs change is quite high with about 300%, so I guess those who had the token before the listing were really excited, or even recent investors. The price is looking not bad as well. But I am confused about the claim that there was no presale nor team allocation and that all token are circulating supply. How is that possible? Did they airdrop all the tokens? Or what?
You are right DOG coin was distributed as airdrop on Bitcoin block via Unisat and other wallets. If the was no pre-sale then the whole supply might have been distributed as airdrop.
In my opinion, meme coins launched on Bitcoin, Ethereum or any other chain, they are not worth holding for long term unless the utility of the token is establish and recognized by market makers. It is always wise to evaluate the value of meme coins before investing in them.