When do male cats go into heat?

Male cats do not go into heat. Male domestic cats reach sexual maturity and begin to produce sperm from 6 to 18 months of age with the average at about nine months. Two months later sperm is present in the collecting tubules at which point the male has reached sexual maturity and can now fertilise a queen i.e. a breeding female cat who has not been spayed.

Unsterilised or late sterilised male cat
This boy is 10 years old. He has no teeth! Too much fighting, I guess. He is described as handsome by women. Photo: Community Cat Coalition on Facebook.
Two useful tags. Click either to see the articles: Toxic to cats | Dangers to cats

Associated page: Is a male cat still fertile after neutering?

In the world of the cat fancy, the experts say that a tomcat (breeding male cat) “can be bred for three consecutive days or three times in one week”.

It is the females who go into heat. They usually have their first heat when they are at about 75 or 80% of their adult size which is usually when they weigh at least 5 pounds (2.25 kg). The age at which females first go into heat varies. My reference book1 tells me that Persians are not sexually mature until 10 months or older while some breeds such as the Siamese may have their first heat as early as five-months-of-age.

Cats are seasonally polyoestrous which means that they have repeated heat cycles over the year. These cycles are dictated to by factors such as the length of daylight, temperature and the presence of other cats. The hormonal system is activated when conditions are optimal and when there are 12 hours of daylight, at which time the queen begins the oestrus cycle. In the northern hemisphere the mating season of cats is from March to September. In the southern hemisphere it is from October to March.

During the breeding season queens go into and out of heat several times but they might not display oestrus behaviour at regular intervals. In early spring they might show continuous heat cycles. From the beginning of one cycle to the beginning of the next there may be 14 to 21 days. Late spring cycles are further apart.

Big chunky male Scottish Fold made in Russia
Big chunky male Scottish Fold made in Russia. Photo and breeder: Анна Зинина (Nizhni Novgorod, Russia).

1. My reference book for this page is: Cat Owner’s Home Veterinary Handbook 3rd edition Sex and Reproduction. Many thanks. This is a great book and strongly recommended for any cat owner. A knowledge of cat health is always useful when used wisely.


Scottish wildcat

Information about the hybridisation of the Scottish wildcat

We know that the Scottish wildcat is either already extinct or heading towards extinction in the wild and in captivity ...
Intact male tortoiseshell is asexual

Can cats be asexual?

I'm referring to domestic cats. The word "asexual" means to lack the desire to have sex. Both intact male and ...
Tomcats produce more sperm in the breeding season

Tomcats produce more sperm from July to December than at other times (Brisbane)

Tomcats produce more sperm during the breeding season. Image: MikeB I've just bumped into a Google Scholar study which tells ...
Are there any gay cats?

Are there any gay cats?

The answer, as the image on this page states, is yes and no. It seems that domestic cats can behave ...

Please search using the search box at the top of the site. You are bound to find what you are looking for.

Useful tag. Click to see the articles: Cat behavior
follow it link and logo

Note: sources for news articles are carefully selected but the news is often not independently verified.

I welcome and value comments. Please share your thoughts. All comments are currently unmoderated.

This blog is seen in 199 of the world's country's according to Google Analytics which is pretty much the entire world.

Scroll to Top