Are there any noticeable differences between male and female kittens in terms of behavior and characteristics"?

Yes, there can be noticeable differences between male and female kittens in terms of behavior and characteristics. Male kittens may be more active and playful, while female kittens may be more independent and reserved. Additionally, male kittens may be more territorial and prone to spraying, while female kittens may be more nurturing and maternal.