PetsWhen dogs and cats reach a certain age, dogs and cats will be in estrus. For male dogs and cats, sperm that produce a certain fertilization ability will gradually start to over-sexualize. Mature, mature doesn't mean it's time to breed, because the dog's body isn't fully developed yet. A suitable period for breeding begins at about 12 months of age.

1. Generally small dogs, mixed breeds are sexually mature earlier, while large dogs mature later.

2. It is generally believed that sexual maturity occurs at 8-12 months after birth, with 6 months earlier. Small and medium-sized dogs are 1-1.5 years old, and the survival rate of breeding offspring is high. Large dogs are most suitable for breeding at 2 years old.

3. Dogs and cats are single estrus animals, not repeated estrus. Normal estrus occurs twice a year. Most dogs and cats come into estrus once in March and April in spring and once in September and October in autumn. Therefore, there is a saying that there are three cats and four dogs, which usually refers to the estrus period.

4. In a few cases, dogs and cats are also in heat in summer and winter.

1. Seasons: Usually spring and autumn are the peak periods of estrus.

2. Age: at least 6-8 months old.

3. Climate: temperature, humidity, suitable environment, easy to estrus.

4. Physical condition: Usually strong, healthy, and disease-free dogs and cats are prone to estrus.

Tips: If you are not ready to breed, it is recommended to arrange sterilization as soon as possible at the age of 7-10 months to reduce unnecessary troubles caused by dogs and cats in heat in the future.