A freemartin.
It is called a freemartin.
Neither. Both calves will be fertile. You will only get a sterile female calf if she's born to a twin bull brother.
Female whales are called cows. The calf is a calf.
Both. A calf is a general term for a young bovine, regardless of sex. A calf, thus, can be either male or female. A male calf is called a bull calf, and a female calf a heifer calf. If the bull calf has been castrated, he is then called a steer calf.
A young female calf from birth until she has had a calf of her own is called a heifer
When a cow gives birth the animal is called a calf, as the calf grows the name changes depending on the sex of the animal. A female is called a hiefer and a male is called a bullock
Such a calf is called a stillborn calf.
A calf
A male dolphin is called a bull a female is a cow and a baby is a calf
A ewe lamb.
A calf is a heifer calf if it's female, a bull calf if it's male.
The offspring of a cow and a bull is called a calf. If the calf is female, she is referred to as a heifer calf. If the calf is male, then he, unless castrated after birth, is called a bull calf. Castrated calves are called steer calves.