“Dwarves.
Tolkien said so.”
Walt Disney disagreed:
https://www.imdb.com/title/tt0029583/?ref_=nv_sr_srsg_0_tt_8_nm_0_q_seven%2520dwarfs
see more at:
https://www.gopbriefingroom.com/index.php/topic,530399.0.html
Since Tolkien was a highly educated linguist I’ll side with him over Disney.
It’s loaf/loaves, hoof/hooves, and dwarf/dwarves.
"Six of the Seven Dwarfs are not Happy!"
I told that to Raymond Smullyan [(33.76, -84.39), G4G12, 5772]. He agreed.