Feral Heart

I have to say then it's possible that some of the item meshes and textures didn't move over properly. But if she sees hers, and not yours [you having different items] then the case would be to redownload and reexport the files to the proper folder. This time be sure no other applications that may lag the computer are up so it can transfer successfully. If you are wearing the same items, and she can see her own, but not the ones you are wearing, then either the downloader has another item.cfg updated than yours, or there's a corruption in the game itself and would be best to reinstall Feral heart [please use as a last resort since it may take longer to download]

It could be possible that they can see items, but different ones that you have. If they have a different item pack than you that could be it.
If you can see all the items in the pack that you downloaded then you, in fact, did it correctly. It's the matter that others may not have the same exact item pack than you do. Since FH only reads the codes in the order that they are placed in the item.cfg and not the code itself, so it won't recognize an item if it's in a different placement. [If that makes sense.]

According to my logic, I think that cats in Feral Heart should be the smallest size
Why?
Because: The cubs on Feral Heart are usually the smallest size, and domestic cats are usually the size of a cub, so that is why my cat character is the smallest size...

I am pretty sure all of this was covered, but again I have to say this.

If you are mapless, and are open to others role playing with you, then yes. Being a smaller size matters. Because you are directly interacting with other species.
However when using a map, that there are NO OTHER SPECIES interacting with you, that's when size matters.
I used to run many cat based role plays, I kept my adult members over default. Why? Because we're going by size base from kit to adult. The kit should not be shoulder to shoulder with its parent when just being born. Logically that would kill the mother. Usually the maps that hold cats are huge base so make this more realistic to their sizes. Making the role play sizes realistic. "being the sizes of lions" no offense but if you've noticed lions are usually capped height, or near, and then they size next to "dragons" that should be gigantic. If we're going by realism here, adult LIONESS are as BIG AS lions themselves. It's all about perspective and what you are role playing, and who with. To each role play is their own, their own requirements. The feral heart sizes are only so much, so little room to actually make sizing 100% accurate.

Plus if I may also add to line of posts. When FH does a party, THEY DO A PARTY. It's a custom map made for the party, DJ(s), advertisements, and contests that are ALSO held. It's really not just the party itself but the many other events that tie into it that make them uncommon and special.

Shallow, you should have put your duck face.

You. Are. All. Pretty. I am VERY jealous.
Seriously how