It turned out there were legit reasons indeed! See the link

https://en.wikipedia.org/wiki/The_Sheep_and_the_Goats#:~:text=Cornelius%20a%20Lapide%20in%20his,And%20it%20is%20quarrelsome.

所有跟帖： 

• Sheep: innocence, modesty, humility, obedience, and patience -7grizzly- ♀ (0 bytes) () 10/18/2023 postreply 19:33:14

• Goat: a fetid smell, fierce, immodest, lascivious, and -7grizzly- ♀ (0 bytes) () 10/18/2023 postreply 19:34:35

• It walks in precipitous places. And it is quarrelsome. -7grizzly- ♀ (0 bytes) () 10/18/2023 postreply 19:34:55