Know and love your cat

How to tell the sex of a kitten: tips

2 October 2023
how to sex a kitten

When you bring a new kitten into your home, one of the first questions that often comes to mind is, "Is it a boy or a girl?" Determining the sex of a kitten might seem like a challenging task, especially if you're not familiar with feline anatomy. However, with a little guidance, you can become adept at sexing a kitten accurately. In this article, we'll explore various methods to help you answer the age-old question: How to sex a kitten?


Identifying the Genitals


The most reliable way to determine a kitten's sex is by examining its genitals. You'll need a well-lit area and a calm, cooperative kitten for this method. Here's how to do it:

  • For Males: Lift the kitten's tail gently and look for two small, round openings close together. The opening closer to the anus is the genital opening, and just above it, you'll see the penis. In very young kittens, the penis might not be visible, but the distance between the two openings is typically shorter than in females.
  • For Females: In female kittens, you'll find two openings as well, but they are positioned further apart. The anus is closer to the tail, and the genital opening is a small vertical slit below it.

Also, as kittens grow, their genitalia become more distinguishable. Male kittens will have larger genital openings and a more noticeable gap between the anus and the genital opening compared to female kittens. This difference becomes more apparent around 6 to 9 weeks of age, making it easier to sex a kitten accurately.


How to sex a kitten at 9 weeks


Sexing a kitten at 9 weeks of age is generally easier than at a younger age. By this time, their sexual characteristics are more developed, making it simpler to identify their gender. Follow these steps to sex a kitten at 9 weeks:

  • Prepare a Comfortable Environment: Choose a quiet and well-lit area where you can examine the kitten without distractions. Make sure the kitten is calm and cooperative.
  • Lift the Tail: Gently lift the kitten's tail to expose the genital area.
  • Observe the Distance: In male kittens, the genital opening and the anus will be close together, and you may see the penis. In female kittens, the genital opening will be further from the anus, and it will appear as a vertical slit.
  • Check for Testicles (Males): If the male kitten is 9 weeks old, you may also notice small testicles near the penis. They will be soft and rounded.
  • Note the Gap: Remember that the gap between the anus and the genital opening is usually wider in male kittens than in female kittens.


Fur Color


In some cases, you can make an educated guess about a kitten's sex based on fur color. While this method is not foolproof, it can provide clues, especially in kittens with certain coat patterns.

  • Calico or Tortoiseshell Kittens: Calico and tortoiseshell cats are almost always female. If you have a kitten with a calico or tortoiseshell coat, there's a high likelihood that it's a female.
  • Orange Tabby Cats: Orange tabby cats are more likely to be male. However, this is not a definitive indicator, as female orange tabbies do exist.
  • Coat Patterns: In some cat breeds, males tend to have larger and darker-colored spots or stripes on their coats compared to females. This method is less reliable than genital examination but can provide additional clues.




Believe it or not, a kitten's behavior can also provide hints about its gender. While it's not a foolproof method, observing your kitten's actions can sometimes help you guess its sex:

  • Playfulness: Male kittens are often more playful and energetic than females. They tend to engage in rougher play and might be more adventurous.
  • Affection: Female kittens are known for their affectionate nature. They may be more inclined to cuddle and seek attention.
  • Territorial Behavior: Male kittens may display more territorial behavior, such as spraying to mark their territory, once they reach sexual maturity. This behavior typically starts around 4 to 6 months of age.

Regardless of the sex of your kitten, try to make things easy for your pet by creating the ideal environment, including the cat litter. At Sanicat you can find Kitten Litter, specifically designed to make training as easy as possible and avoid irritation. It is a natural clay-based cat litter designed for kittens and sensitive cats, with a delicate valerian fragrance that awakens the kitten's curiosity to use the litter box, facilitating their learning.

In conclusion, learning how to tell the sex of a kitten is an essential skill for any cat owner. While it may be a bit challenging at first, with practice and patience, you can become proficient at sexing kittens accurately. Remember that the most reliable method is examining the genitals, especially between 6 to 9 weeks of age. Additionally, consider fur color and behavior as supplementary indicators. Now that you know these techniques, you'll be better prepared to welcome your new feline friend into your home.