If consumables are not transferable, it's to protect us, the customers / breeders.
If food and vitamins were transferable, then there would a kind of "secondary market" for them
were some malicious people could sell malfunctioning &/or copybotted items.
KittyCatS would not be able to help us and redeliver said object because it wouldn't have been sold by them.
On a side note, Winter : you can make a direct landmark to the food location.
Hikari