Yes, there are bulls and cows. There are several ways to distinguish male cows from female cows:

1. Sex identification: based on the shape, size, location and other characteristics of the genitals. The bull's genitals are big and thick, with two testicles inside; Cows have smaller genitals, and their vaginas and nipples are more obvious.

2. Identification of external body shape: Bull's head, weight and height are bigger than cow's, with more magnificent body shape, wider head and stronger horns.

3. Feeding management records: judging by feeding management records, such as weight, growth rate, production performance and other parameters. Bulls generally show higher body weight and growth rate; However, there are also differences in milk yield, milk fat rate and lactose content of dairy cows, so gender identification can be carried out according to the data.

Generally speaking, the sex identification of dairy cows needs the help of professional veterinarians or breeding experts, especially in the early stage. Because it is difficult to clearly distinguish the external body shape when the cow is still very young, it is necessary to judge the genitals in order to provide targeted diet, disease prevention and other programs according to its growth characteristics in the subsequent feeding management. At the same time, correctly distinguishing the gender of dairy cows also has great influence on the management and reproduction of dairy cows.