Mouth wounds bleed a lot, but they're usually not as bad as they look. Try to keep your child (and yourself) calm—a hug and a quiet voice go a long way with kids. There's no need to call the pediatrician unless the bite goes all the way through. Just:
1. Rinse her tongue with cold water if there's dirt or food in her mouth.
2. Apply cold pressure with ice or—even better—a frozen fruit bar. (If her tongue is still bleeding after 30 minutes, call the doc.)
3. Offer soft foods for a day or two, and try to avoid anything acidic.
4. Be patient. Most wounds heal within seven to ten days, and it's rare for tongue bites to become infected.