Buck

Dreaming of a male deer or buck symbolizes vulnerability. To pursue the buck signifies overcoming fears and taking steps toward your goals.
Killing the buck indicates malevolence or someone hurting you because of reasons you are unaware of.
To simply observe the buck in a dream means that the buck symbolizes you.
As a vulnerable and gentle creature, it represents feeling of your own weakness. For instance, you'd choose to ignore a problem rather than dealing with it in waking life.