| | Dental Health | Babies & Teething How old is a teething chihuahua? Chihuahuas typically start teething around 3-4 months of age, and are usually finished teething by 6-8 months. Babies & Teething - Related Articles What doe yellow teeth look like? How to Save Baby Teeth Why Is Baby Spitting Up Curdled Milk? Can you lactate a year after weened your baby? Effect of measles and mumps on dentition? When do babies start smiling? How many teeth does a grown up have have?