I saw a couple suggest biting her back... DO NOT DO THIS!!! It does not teach her to not bite, it teaches her that "i am bigger and can hurt you" At the age your daughter is, she will not understand thats why you bit her. What she will see is that the person she trusts the most hurt her.
On that note, I have a biter too...He is now 2 1/2. Biting is actually NORMAL behavior. Kids tend to do it for the same reasons others hit, pull hair, push, and the like. I would ask if someone can shadow your daughter to find the reasons and to try to stop it before it happens. When she does this, give her a time out right away! Ignore the yelling and crying, and after a minute, go back and do what some of the others have told you... Make a song of teeth are not for biting...I like the teeth are for food, not friends...I read a book called "Teeth are not for Biting" to my son...It helps a little...Mine mostly will only do it when he is crowded and feels threatened. This will stop when they learn how to talk and tell people what they are feeling. You can encourage her to use her words..Tell her "no biting! we say stop! or go!" As hard as it is, do not yell at her...she is more apt to listen to you when you are calm and talk in a soft voice. Tell her "I understand ** came too close to you, lets say go when that happens" When you see her bit another child, tend to the bitten child first! Say "no biting!" as you pass your child and dote on the other one. this does effect her more than you would think...when you know everything is ok, then go to her, tell her "no biting" again, and make her say Im sorry to the other kid. Even tho she can not say it herself, she may hug the child (What my son does) or just look at you, and you tell the child "** is sorry she bit you." Most of this advice I got from professionals and my pediatrician. You may want to talk to yours too...I have tried most everything under the sun..and the most common advice I got was simply a "They have to grow out of it"
On your end, I know its so hard...i have broken down in tears because of this. He and I both have lost many potential friends due to the biting, and IT HAS NOTHING to do with you as a parent!! Do not let anyone tell you otherwise!
Has anything changed recently in your home? new routine? new baby? recently return to work? these all can be triggers...
Here is a good article: http://parentcenter.babycenter.com/refcap/preschooler/pbe...