Minecraft wiki entry for Hoglin, associated text: The reason Hoglins run away from warped fungi is because they dislike their smell.[6]
Similarly, when asked if nether portals smell bad to Hoglins, Henrik responded saying that the reason Hoglins run away from Nether Portals is because they find the sound annoying.[7]
Similar to the ravager originally being called "illager beast" before its official name was chosen by the community, the Hoglin's name was also chosen by the community. Its initial placeholder name was piglin beast.
In Bedrock Edition, there are unused texture files named hoglin_meat_raw and hoglin_meat_cooked that are textured identically to raw and cooked beef, respectively.
The hoglins have no pupils, unlike overworld pigs.
Henrik Kniberg released a video[8] of a group of hoglins killing a piglin, then "celebrating" by bobbing their heads, then getting on their hind legs and dancing. This feature was never added into any snapshot and is not actually in Minecraft.