"K Wind" wrote in message
These people think the dogs will warn us
if there is a problem with Carbon Monoxide because it will affect them
before it will affect humans.


This is correct. The dogs will die before you do. If you see the dogs
dead, you know you will die shortly. If you don't see them dead, it may be
because you missed it and are already dead. CO death is supposed to be
painless so you won't feel a thing.

As for the heater, some are supposed to be OK for a house, others may not
be. Read the manufacturer's instructions carefully and be sure you have
some ventilation. Be aware of the fire hazard also. Filling the tank is
the most dangerous situation.
Ed