Rhinox weirdness

[Deathwing]

Today I encountered a Rhinox in a flower field. Aren't they supposed to only spawn underground?
Also, I decapitated the Rhinox, but this did not kill it. It also said that the Rhinox still had its horns (which should be attached to the head? So would have come off as well?).
Is this supposed to be that way? Do Rhinoxes have 2 heads / enough regen to survive decapitation?

[Sentient_Toaster]

Multiple heads. They apparently have a mutation "Multiple Horns" that actually means multitple horns on multiple heads.

https://cavesofqud.fandom.com/wiki/Rhinox
https://cavesofqud.fandom.com/wiki/Multiple_Horns

Qud's spawning system allows what would otherwise be grossly out-of-depth spawns to happen occasionally. I've seen everybody's favorite cloned homicidal swordsbear meat-popsicle spawn in the Waterlogged Tunnel more than once, for instance.