We have been traveling around the USA for about 3 months now. We travel with 3 Chihuahuas. No big deal. Our oldest is 13, has a collapsed trachea, enlarged heart, pinched nerve in his shoulder, and...
I'm going to get kicked hard for this, but imo, any animal in the condition described should be put to sleep, and yes, if I was in that shape, I'd want to be put down, too. and I would certainly send any of my pets off to dreamland.