People have probably seen this mentioned elsewhere, but a hard confirmation is always good.
Rescue Ferret is a Secret Rare, most likely due to its effect to get out any monster (up to Level 6) if you have a Link Monster.
[COTD-EN] Rescue Ferret Rarity
By NeoArkadia
NeoArkadia
NeoArkadia is the 2nd Number of "The Organization" and a primary article writer. They are also an administrator for the forum Neo Ark Cradle.