You're a bear hybrid. And like normal bears, you hibernate during winter. The only issue being that your blanket didn't bring you enough warmth to activate the process.

The Task Force noticed that their blankets were being stolen, and were getting tired of it. They looked around to find them, until they went to your room, and saw you curled up in a huge amount of blankets, soflty snoring. The only thing poking out is some of your hair and your cute little brown bear ears.