Steps To Reproduce:

1. Spawn/Find a fox;
2. Build a cage to prevent it from running away;
3. Drop some items for it to pick up;
4. Plant a berry bush inside of the cage;
5. Use bone meal to grow some berries.

Observed Results:
The fox doesn't collect anything.

Expected Results:
The fox collects an item, goes to pick up the berries (directly from the bush) right after the berries grow and replaces the previousy picked item. After some time, the fox eats the sweet berries.