Terrarium 
To dream about a terrarium indicates that you are comforting yourself and hiding aspects of your personality from others. The terrarium might also represent virility, inspiration, and fresh thoughts.
Threshing
To dream about threshing grain symbolizes progress in commerce and familial happiness.
Wallpaper
To dream of wallpaper can be thought of as a defense between yourself and the people in your waking life. It may also indicate that you are hiding a secret from your friends and family. Conversely, it may indicate that there is some part of your life that needs to be spruced up and made more beautiful.
If you dream that you are removing wallpaper from a wall represents that the shields you have put up around you are finally being taken down. You no longer wish to hide from those around you. You are will to share your true self with your waking life friends and family.
The color and pattern of the wallpaper will offer clues as what kind of barrier, secret, or feeling you should focus on.
Bleachers
To see or sit on bleachers in your dream indicates that your observations will help you reach your objectives. The appearance of bleachers may also represent emotions that you associate with your school years.
Bullfight
To dream about a bullfight is indicative of the battle between your primitive cravings and soulful yearnings.
Chihuahua
To dream of a chihuahua symbolizes a person in your life who is normally passive, but suddenly decides to voice their opinion. This person may feel inferior to others and is trying to build him/herself up.
Christian
To dream of Christianity implies that you are tapping into your own spiritual progression. Perhaps you are approaching a new level of self-discovery or awareness. It may also represent someone you know who holds the name Christian.
Dormitory
To dream that you are in a dormitory suggests the level to which you consider wisdom and education in your life. You could feel that you learn in every aspect of life. If you are residing in a dormitory at present, then you may simply be dreaming about your current situation.
Greyhound
To dream about a greyhound represents serendipity, joyous gifts, and friendship.
Gymnasium
To dream that you are in a gymnasium implies that you should use your experience and knowledge to assist you with making decisions and setting objectives.