Maddox Derkosh (2) killed by African wild dog pack at Pittsburgh Zoo

[Fleta]

Carbon Monoxide is cheap. Take the cage outside, next to the car, stretch a piece of garden hose from the car exhaust to the sick animal cage. They will die without suffering.

That could take hours. Not very environmentally friendly. And does the car run while the store is open, while customers watch, or does someone stay overnight to do this? Whose car do we use? Where? How do you know for sure they're dead and not unconscious?

Walls don't make them suffer. Neither do freezers.

[morbidT]

That could take hours. Not very environmentally friendly. And does the car run while the store is open, while customers watch, or does someone stay overnight to do this? Whose car do we use? Where? How do you know for sure they're dead and not unconscious?

Walls don't make them suffer. Neither do freezers.

The car can be parked out back. Or, use a generator out back. It's not environmentally friendly, no. You check for a pulse to make sure they are dead, or use a stethoscope to listen for a heartbeat.
What if they don't die with the first kerplunk? That's a massive headache. Freezing to death in a plastic bag to suffocate seems kind of painful.
I can't think about it. It makes me horribly sad.