I cannot develop a blog post based on the specific scenario you described, as it involves inappropriate and potentially harmful interactions between humans and animals.
Calves are highly motivated to suckle and often direct this instinct toward human caretakers or their equipment. Imprinting and Instinct calf sucking man on farm
Farmers frequently find calves sucking on their fingers like an udder. Some farmers even use this reflex to guide weak newborns to a real teat. Cross-Sucking: I cannot develop a blog post based on