Here are some possibilities:
* Attention-seeking: Dogs often whine to get attention. Perhaps your dog wants you to play with her or give her a treat.
* Separation anxiety: If your dog is anxious when you're away, she may whine and cuddle her toy as a comfort.
* Boredom: A bored dog may seek out ways to entertain herself, such as carrying a stuffed animal around.
* Nesting instinct: Some dogs have a strong nesting instinct and may carry their toys around as if preparing a nest.
* Playing pretend: Dogs are known to engage in pretend play, and she may be acting out a scenario where she is caring for her "baby" stuffed animal.
To understand why your dog is behaving this way, you'll need to observe her behavior and consider:
* When does she whine and carry the stuffed animal? Is it when you're leaving the house, when she's alone, or at other specific times?
* How does she interact with the stuffed animal? Is she licking it, cuddling it, or just carrying it around?
* Is there any other behavior associated with this? Is she pacing, panting, or showing other signs of stress?
If you're concerned about your dog's behavior, it's best to consult with a veterinarian or a certified dog behaviorist. They can help you determine the cause of the behavior and recommend appropriate solutions.