Badges update automatically and link to the mod page on MineUniverse.
Sniffers don't do much other than give you seeds that are not worth it, but with this mod, it finally has a proper job!
If you are ever on a floating platform or whatever, you will not be able to get Farmer's Delight Seeds and plant them, which makes the entire Farmer's Delight mod not useful. Some Oneblocks or maps give you special traders, and you can get Sniffer eggs from them! Once they hatch and grow, you will be getting Farmer's Delight Seeds.