Age of a goat can be estimated based on their eight lower front teeth. Different factors such as diet and health can influence the growth of teeth in goats. Animals having all eight teeth, small and sharp, are considered to be about one year old. If all eight teeth are not present either animals are not yearlings or they may be underfed for optimal dental growth. When two central teeth are lost (about 12 months of age) and replaced by two larger teeth, animals are about 1.5 years of age. Animals having four central teeth replaced by larger permanent teeth are about two years old. Six large permanent teeth will indicate 3 years of age and animals having eight large teeth will be  considered four years of age. From this point on, all eight teeth are present (fifth year) and teeth will start wearing off mainly from the central point to the edges. The more wearing indicates ages beyond four or five years of age. Ages beyond five can be approximately estimated.