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He is 100% fertile at the time of birth. Fertility declines with age.
The exact same way adults do. Boy has sex with girl. Sperm enters egg. Egg grows into a baby. Age is irrelevant. The age a boy and girl become fertile is different for everybody.
No, they grow up. Kittens become adult cats around one year of age.
From 7 months to a year...
Average males usually become potentially fertile (produce sperm) at age 13, however aren't fully fertile until age 14-16. See link in related links.
At any age, but only if they need it. Please keep the bath as short as possible, and dry them thoroughly, to ensure that they do not become chilled.
All breeds of domesticated cats grow to full maturity in about a year.
in the age of 16 girls become for sexually.
The gender of a kitten can typically be determined at around 6-8 weeks of age.
The sex of a kitten can typically be determined at around 6-8 weeks of age.
You can safely trim a kitten's nails starting at around 8 weeks of age.
She was always female!