No a bullock is a bullock
The diminutive of a bull is a bullock.
bullock
In English there are no masculine or feminine forms. English uses gender specific nouns for a male or a female, such as male and female. Since a bullock can refer to both a steer and a young bull, the female counterpart of a young bull would be a heifer. But for a steer, that would be a spayed heifer.
Bullock's was created in 1907.
Bullock's ended in 1996.
Alice Bullock's birth name is Alice Floropoulos Bullock.
Bob Bullock's birth name is Robert Douglas Bullock.
Chandler Bullock's birth name is Martin Chandler Bullock.
Craig Bullock's birth name is Bullock, Craig Anthony.
Eldon Bullock's birth name is Eldon Lamar Bullock.
Hiram Bullock's birth name is Hiram Law Bullock.