A business card should always include your name, position in the company, company name and contact information such as email address, phone number including extension, fax number, and mailing address. If you would like to include your cell phone number as well as your office number then it is perfectly acceptable. If your company has a logo then you should put that on your card as well as a logo on a business card does just what a logo is meant to do, set your business card apart from others.
i am 13 and i am starting my own business. it's a business where i watch peoples animals at their homes for them. i know to put the price, my number, etc on the card but stuff like age and the type of animals i watch (which would be any.) i don't want them to call me up, and then be put off because of the fact i'm 13 and it caught them by surprise.