Having just seen the full contrast between a well planned PTS and the shambles I witnessed 18 months ago I can only urge people, yet again, to discuss this fully with their vets BEFORE the time comes.
Mack was given an injection of a GA combo, Domitor and Ketamine and then popped into his carrier with Lexie for around 5 minutes whilst he lost consciousness. He stretched out and relaxed as the drugs took effect and literally just drifted to sleep. The pentobarbituate injection (this is the one that stops the heart) was then given abdominally and I swear he was gone in less than 40 seconds, such a contrast to the 4-5 distressing minutes it took Caspian when conscious.
I am satisfied, apart from the little sting of the GA injection which didn't even cause him to flinch, Mack never felt a single thing.