Their experience is not my experience and makes me wonder about their test methodology. I have never seen a sprayed toad exhibit any of the behaviours e.g., toxin exuded, they list and certainly they are not still alive for 10 to 20 minutes. Compared to pinning them to a board and smashing their heads in with a hammer I think my idea of humane and theirs might be somewhat different.
Fair enough assessment considering the different experiences.