It turns out that not only humans experience menstruation, several primates such as bats, and several types of mammals also experience menstruation and secrete blood from their uterus for a certain period of time. This process involves periodic bleeding cycles that are regulated by the hormone system in the body's organs. Even so, there are still many people who do not realize that animals can also menstruate. Then, what animals can menstruate?

These are the animal that can menstruate 

It turns out that just like humans, female animals also experience menstruation. However, it should be noted that the menstrual cycle in animals varies, depending on the species. And the majority, animals that experience menstruation are from the mammal family. So, if you are curious about animals that experience menstruation, consider the following review:

• Monkeys/Apes
  The anatomy of apes is similar to that of humans, including having two hands, two legs, ears, and the same shape of face, eyes and nose. Not only that, the reproductive system of apes is also similar to that of humans, including regular menstrual cycles every month. According to research in the Journal of Biology of Reproduction, primates such as great and small apes have menstrual cycles similar to humans, it's just that there are differences depending on the type of species. The duration of their menstrual cycles ranged from 21 to 37 days, with a span of 2-4 days.
  
  
• Bats
  Bats are the only type of mammal that can fly using both legs which have developed into two wings on the right and left sides of its body. In addition, according to information from the Oxford Academic website, there are four species of bats that experience menstruation, including:
• Tailed fruit bat (Carolus was seen)
  
• Long-tongued bat (Glossophaga soricina)
• Black massive bat (Moloussus ater)
• Fruit bat (Fulvous liar R. leschenaultia)
  
  
• Spiny Rats
  The spiny mouse is a type of rodent that has a characteristic hard hair similar to thorns. However, what makes the spiny rat unique is the fact that it menstruates just like humans. In one cycle, menstruation in spiny rats occurs for 8-9 days with a duration of about 3 days. Bleeding in spiny rats is caused by a decrease in the concentration of progesterone.
  
  
• Elephants
  These large mammals also include animals that experience menstruation. According to nrcn.org, female elephants who are menstruating use grass as pads. During this time, female elephants tend to stay in one place for a while.
  
  
• Dogs
  At the female dog's sexual maturity stage, estrogen levels will increase and there will be a significant decrease in the ovulation process in the uterus. This stage is known as the estrus cycle and lasts for about three weeks. Although the estrus cycle usually occurs every six months, it can vary depending on the breed of dog species.
  
  When a dog is in heat, there are several physical signs that can be observed, such as frequent urination and red discharge from the genitals. This resembles the process of menstruation in the human body. Therefore, it is important to pay attention to the dog's estrus cycle and provide special care during this period to maintain health and comfort.

Those are some animal species that can also experience menstruation like humans. This condition does not only occur in women, but also occurs in animals with the female sex. By knowing this, it is hoped that we can increase knowledge and broad insights on this matter.

References:

https://akurat.co/hewan-yang-bisa-menstruasi

https://www.kompas.com/skola/read/2023/02/11/160000969/5-hewan-yang-bisa-menstruasi?page=all