Creating baby mobs (for Java blockbench)

[paper trench]

I couldn't find clear answers in my search, so I decided to post them here:

Do you make a separate file for both parent and child mobs? or do you shrink the mob/texture w/ coding?
and,
Would mob eggs (not spawn eggs) be considered a Java block/item or a modded entity?

[agile latch]

Eggs like the turtle eggs would be a simple block.

Also, vanilla simply shrinks the whole model except for the head. It's not a separate model.

However, if you want to, nothing prevents you making a different model for the baby variant.