Also known as: エリート乳牛さん
Cow-chan's senpai, who's a regular at competitive shows. She frequently gets impregnated by her husband (caretaker), so she has many children, such as her oldest calf.
Source: https://odaibako.net/detail/request/d2653e5d-d6a1-4021-8061-6f390b69e7ce?card