Pony Club HB Rating Practice Test

The sign being tested is how teeth wear can reveal age. Cups are shallow indentations on the chewing surfaces of young permanent incisors. As the horse grows and chews, these cups wear away and disappear. This disappearance on the lower central incisors can be seen as early as about six years old, making it the earliest reliable age indicator among the options. The other signs—like a hook on the upper corner incisor or a dental star in the center incisors—tend to appear later, so they’re not as early a signal.