Noticed that the Holstein calves all have udders including the males. Not necessarily a bug or of great importance but thought I would mention it.

Both gender Holstein calves next to each other.

Minecraft 1.16.5
Forge 36.2.34
HotChicks 1.0.0

thank you, good eye! we removed the horns from calves, but we'll need to fix this too.

ope thank you for pointing this out, slipped right past!