Here's why:
* Guinea pigs can get chubby: Just like humans, guinea pigs can gain weight and become rounder, especially if they eat a lot of treats or don't get enough exercise.
* Other factors contribute to size: Bloating from gas, a full bladder, or even a tumor can make a female guinea pig look bigger.
* Pregnancy can be subtle: Early pregnancy in guinea pigs might not be visibly noticeable, and even later on, it can be difficult to distinguish from other reasons for a rounder belly.
If you suspect your guinea pig might be pregnant, here's what you should do:
1. Consult a veterinarian: They can do a physical examination, ultrasound, or palpate (feel) the guinea pig's belly to determine if she's pregnant.
2. Separate the male: Immediately separate the male guinea pig from the female to prevent further pregnancies.
3. Keep an eye out for changes: Even if your vet doesn't confirm pregnancy, keep a close watch for signs of pregnancy like nesting behavior, increased appetite, or milk production.
Remember: It's always best to be safe and err on the side of caution when it comes to guinea pig pregnancies. A vet can give you the most accurate information and help you prepare for a possible litter.