To dream that you are in a cage, denotes that you are experiencing some inhibitions and powerlessness in some areas of your life. You may feel restricted, confined and restrained in a current relationship or business deal. Somebody may be keeping a short leash on you where you are lacking the freedom to act independently.
To dream that you are putting a wild animal into a cage, signifies that you will succeed in overcoming your rivals and fears. It is also symbolic of you being able to control you animalistic rages and anger.
To see a bird in a cage, suggests that you are feeling limited in your expression and a sudden lost of freedom. You may be experiencing frustrations and an inhibited spirituality. The dream may also imply that you are feeling like a "jail bird".