Go for it!(:

its just something people do .

There is actually no dye for the hair and fur of animals. Dyes are not considered safe for the health of animals since they will be prone to chemical burns and allergies. Licking of their coats may also lead to ingesting the dye and cause serious health issues.

Dye it a color when it is clean. However, read the label on your hair dye thoroughly. Some dyes require a wash after you dye to wash the dye out. In this case that means you will wash your hair twice in one day. Make sure you use a leave in conditioner in addition to your conditioner so that your hair gets some moisture back.

Bleaching is ok when your hair is dirty. However, I wouldn't recommend letting more then 1 day go by unwashed before bleaching or you may risk uneven color.

you can't its fine the way it is.