My dog likes to sleep/hang out under the bed, and she sometimes goes there when she's nervous too. I understand that the protected space is comforting to her. Sometimes I reach under and pet her, and she doesn't seem to mind (usually rolls belly-up), but last night she took a chew-bone under the bed and became very defensive. She exhibits no other signs of food aggression really, and we've even practiced filling her bowl but making her wait for permission to eat. She has no confusion at all as to who is the boss. I always thought that, as the pack leader, I may take a treat or food from her at any time without her getting aggressive, and this has been entirely true until I tried to take it from her while she was under the bed. Should under the bed be just her private space where I'm not allowed to go/bother her?