In one study, observers continued to observe 12 domestic cats for 6 months, and over a period of 6 months, humans worked with animals for 2 hours a day.

Then, the cat must select one of the two images every day to get the reward.

results show that although cats do not have any difficulty in identifying animals they live with, they only recognize humans 54.5% of the time.

This shows that cats cannot distinguish gender by looking at their faces.

Instead, they need other stimuli to distinguish between men and women, such as sounds and odors. Can cats smell human hormones and smells?

The sense of smell is 14 times more sensitive than humans.

Cats have 200 million scent senses in their noses, which enables them to sense a range of human hormones and pheromones, including pregnancy chemicals and menstruation.

Understanding whether cats can smell human pheromones and hormones is crucial to determining whether cats can recognize human gender.

Cats can smell the following scent:

1. Pregnancy hormone:

Pregnancy is a process that only women will experience.

Some experts believe that cats can perceive pregnancy before expectant mothers know it.

However, it is more likely that cats’ strong sense of smell can sense progesterone, human chorionic gonadotropin and estrogen produced by women’s bodies.

These hormone changes can also affect your sense of smell, which cats can detect almost immediately.

Of course, cats can sense more than hormones.

The female body will become hot during pregnancy, so cats may become more clingy when a woman is pregnant and likes to rub against her to keep warm.

Moreover, cats are often gentle to pregnant women and become affectionate. This may be because they can sense the weak heartbeat of their children~

Not only that, cats can also detect changes in behavior or emotions, and cats can sense sadness or unhappy emotions in pregnant women

Although it is not entirely clear whether cats can distinguish men and women through these pregnancy hormones, it is obvious that they can identify the uniqueness of pregnant women~

2. Pheromones

Pheromones are natural chemicals secreted by the human body. They have no odor, but they stimulate social responses in the same species like hormones.

While some cats can smell human pheromones, they may not understand that human pheromones have little effect on felines, smart cats can use signals sent by humans to judge human feelings - whether they are happy, sad or fear.

Cats use pheromones to sense human fear or adrenaline.

So, some cats like to smell the underarms and crotch, because there are glands located in the crotch and armpits, and the glands are releasing information about human age, gender and emotions.

Women who are on menstruation or just gave birth to a baby will release unique pheromones to attract cats.

So, when your cat sniffs your crotch or armpits, it's just trying to check your scent information to find more about you.

Human ovulation and pregnancy are effective ways for cats to distinguish women from men~

3. Menstrual cycle:

Cats can detect when women menstruate by smelling odor and hormone levels.

Cats can also detect emotional changes in women during their menstrual cycle.

However, menstruation has no concept for cats, because cats do not have menstruation either, but knowing that something seems to have happened in this human uterus that they cannot see.