herdling
A herdling is a young animal belonging to a herd. The term is most commonly used for young ungulates, such as cattle, sheep, goats, and horses, though it can also refer to the young of other social mammals that live in herds. The specific name for a young herd animal varies by species; for example, a young cow is called a calf, a young sheep is a lamb, a young goat is a kid, and a young horse is a foal. However, the general term "herdling" can encompass all these young animals when they are part of a larger group.
Herdlings typically rely heavily on their mothers and the protective structure of the herd for survival. They