* Preventing unwanted pregnancy: Even if the male dog is neutered, there's a small chance of residual sperm, and even if he's not, a second pregnancy could be dangerous for the female.
* Stress reduction: A pregnant dog needs a calm and safe environment. The male's presence can be stressful, especially as the pregnancy progresses.
* Potential aggression: Hormonal changes during pregnancy can cause the female dog to become more territorial and aggressive, making her potentially aggressive towards the male dog.
* Preventing injury: A male dog might accidentally step on or injure the pregnant female.
How to Separate Them:
* Separate living areas: Keep the dogs in different rooms or areas of the house.
* Use a crate: Keep the female dog in a safe and comfortable crate at night and during the day when you're not around to supervise.
* Walk them separately: Avoid walking them together, as this can also lead to conflict and stress.
Remember:
* Even if you've always had a good relationship between your dogs, pregnancy can change things.
* It's essential to prioritize the safety and well-being of the pregnant dog.
* Consider a dog walker or pet sitter to help with care while you're at work.
You can also discuss this with your veterinarian for additional advice.