They now have reusable heat packs that are
self-activating and reusable. Check out the Shin-Bio brand, among others.
No electricity needed. Just activate the heat pack manually and put it in
the sleeping bag with you, and voila'!--no more need to feed a
Labrador. They last for a few hours, so you might need two or three
to get you through the night. A bottle of Captain
Morgan is probably cheaper, though. Dr
Q
