Snake 
To dream of seeing or being bitten by a snake implies that you are afraid and anxious about some issue in your life. Perhaps this dream is suggesting that you should be aware of a pending situation that may cause you harm.
The snake can also represent the male genitals and may be warning you against entering into a certain sexual encounter. The snake can also represent someone in your life who is heartless, cruel, and treacherous. On a more optimistic note, the snake symbolizes intelligence, change, and understanding. It implies revitalization of the spirit and alterations in life.
Killing
To dream that you kill someone portends your overwhelming tension which may cause you to blow your top as you are likely to lose temper and self-control. Check your emotions and assess if you are harboring rage or bad feelings towards the person you killed in your dream. Your dream may be an actual projection of enormous anger or hatred towards that person. On the other hand, you might be merely seeing yourself in the person you killed. You may be wishing to end the traits that this person represents within you. Is it dawning on you that you might end up as an equally scornful person?
To dream that you have been killed symbolizes a certain level of inconsistency between your actions and your emotions. Alternatively, your dream may be pointing to sudden major changes happening in your waking life.
Your dream may also represent a part of you or your life that you have ignored has been resulting to a number of annoying incidents. The act of killing may be a dramatization for killing these negative and embarrassing traits and habits.
Eel
To dream of an eel suggests that you have difficulty devoting yourself to something or someone. This dream can also suggest that you have trouble keeping things close to you.
Asp
To dream about an asp is a symbol of adversity, loss of self-worth and anger.
Wind
To dream of the wind blowing represents your life force, vigor, and energy. It is a reflection of any changes in your waking life. To see gusty or strong winds is a representation of trouble and inner turmoil. There is much anxiety in your waking life.
Worm
To dream of a worm is an indication of negativity and general weakness. You have a poor self-image or a low opinion of a family member or friend.
To see a worm crawling on some part of your body is an indication that someone in your waking life is taking advantage of you and your kindness.
Fangs
To dream about fangs suggests that you have said something that caused others pain.
Slide
To dream that you or somebody else is on a slide represents an issue or aspect that is not firm or committed. Perhaps you have no control over an issue or circumstance in your life.
Viper
To dream of a viper is an indication that you are concerned that your peaceful life may soon be disrupted.
Adder
To dream of an adder means you should beware of a scheming or devious person. They should not be believed. This could also represent an individual or opportunity that escaped your grasp.
Blood
To see blood in your dream is a symbol of energy, excitement and frustration. If you see the word 'blood' written in your dream, it may be a reflection of some issue regarding stubbornness or rigidity.
To dream that you are bleeding or losing blood means that you are mentally fatigued. It can also symbolize a hurtful conflict existing in a personal relationship. Perhaps you regret some action you performed. This is a popular dream for expectant women and women who are in their menstrual cycle.
To dream that something is written in blood indicates that you possess much determination and drive. You refuse to quit a task until it is completed.
To dream that you are drinking blood implies that you feel invigorated and full of energy.
Cobra
To dream of a cobra indicates imagination, inspiration, and innovative ideas. You are being mesmerized or blindsided by a certain issue or person.