The tag implication #68818 sniffer_(minecraft) -> minecraft is pending approval.
Reason: It's a mob from Minecraft.
Source: https://minecraft.wiki/w/Sniffer
See also my list of Minecraft mobs without implications at topic #58759.
Updated
Posted under Tag Alias and Implication Suggestions
The tag implication #68818 sniffer_(minecraft) -> minecraft is pending approval.
Reason: It's a mob from Minecraft.
Source: https://minecraft.wiki/w/Sniffer
See also my list of Minecraft mobs without implications at topic #58759.
Updated