Suitable for all hays and grasses, as well as fresh veg, keeps foods/hay fresh and dry. The animal will be encouraged to work for its food by stretching for reaching the food. makes the rabbit work a little for their food. Black. This food ball can be perfectly used for small animals as well as for bird cages. It can be fixed at the cage’s corner or at the cage’s ceiling. The food ball prevents the contents from falling down to the ground.