Found these stow-aways on the front seat floor under some hiking gear when I unpacked the FJ back home on Monday morning. I suspect they're pack rat babies. Couldn't find any more siblings or the mother but she may still be hiding somewhere inside my FJ. Not the first time I've picked up a pack rat hitchhiker while car camping. That's what I get for leaving the doors open while in camp. They had succumbed by the time I found them so I gave them a proper burial and service.