Cows don’t have penises. Bulls do. Steers do. Perhaps it’s a bull that identifies as a cow?
A cow identifying as a bull has a “penix”. /s
Cow, in common parlance, a domestic bovine, regardless of sex and age, usually of the species Bos taurus. In precise usage, the name is given to mature females of several large mammals, including cattle (bovines), moose, elephants, sea lions, and whales.(Britannica)