Ball of Fur

The Ball of Fur is an item added by Actually Additions. Tamed Ocelots will occasionally drop it, like how Chickens drop Feathers. There is a 1/5000 chance each tick, or a 1/250 chance each second, or 24% chance each minute, of a Ball of Fur dropping from an Ocelot. Right-clicking it will drop a random item.

Dropped items
The chance of each item being dropped is the weight of that item over the total weight of all the items, meaning that items with greater weight are more likely to be dropped.