yeanling

Six days thereafter, the goat gave birth to a yeanling without any veterinary intervention.

For example, words ending in -ling, such as cnoepling, frumbyrdling, geongling, stripling, shaveling where the diminutive suffix -ling was originally used for forming names of baby animals, e.g.: duckling, yeanling 'young lamb', fledgling 'a young bird', yearling 'an animal, especially horse, between one and two years old', Swedish killing 'goatling', also by extension sapling 'a young tree'; many of which tan also refer to a 'boy'.