Gnars is now a DAO but it didn't start as one. Up until Gnar 626 we had a different NFT contract. But it wasn't cut out for what we wanted to do in future.
The original Gnars are known as OGs and differ in appearance to the current Gnars NFTs. Since we've upgraded to fully onchain governance, we're amalgamating voting into one token.
For every OG you own, you can claim 2 brand new Gnars (for free) to maintain your OG voting power. This can be done once per OG and you get to keep it (no burning) as the digital collectible it was always intended to be!