Four 
To dream of the number four represents steadiness, physical restriction, hard work, and worldly qualities like the four corners of the earth. It also represents capitalistic issues. You are a person who makes things happen.
Nine
A nine in your dream denotes that you are on your way to progress, fulfillment, rebirth, and renewal. You aim to change the world for the better.
Fangs
To dream about fangs suggests that you have said something that caused others pain.
Pager
To dream of a pager foretells the difficulties of a person in communicating their thoughts to you. They are trying to find ways to get through to you. Alternatively, you might also feel that a person is trying to influence you with their opinions and beliefs.
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.
Cobra
To dream of a cobra indicates imagination, inspiration, and innovative ideas. You are being mesmerized or blindsided by a certain issue or person.
Three
To dream of the number three is a sign of stamina, might, ingenuity, and introspection. The number represents a threesome - the olden days, the current moment, and times to come; or dad, mom and baby.
Seven
To dream of the number seven represents personal accomplishment, therapy, achievement, harmony, and realization of your inner sanctuary. You are considered to be an exceptional and unconventional person.