Here's why:
* Pregnancy itself doesn't cause phlegm production. Bunnies don't typically produce phlegm like humans do.
* Respiratory issues: A phlegm-like substance could indicate a respiratory infection, such as pneumonia or a lung abscess. These are dangerous conditions, especially for pregnant bunnies.
* Other possibilities: The substance could also be due to digestive issues, an injury, or a foreign object stuck in the throat.
What to do:
1. Consult a veterinarian immediately. Do not try to diagnose or treat your bunny yourself. A vet can examine your bunny, determine the cause of the phlegm, and provide the appropriate treatment.
2. Isolate the bunny. Keep your pregnant bunny separate from other rabbits to prevent the spread of any potential infection.
3. Monitor for other symptoms. Pay close attention to your bunny's behavior, appetite, breathing, and energy levels. Any changes should be reported to your vet.
Remember, pregnant bunnies are especially vulnerable, and early intervention is crucial.