It definitely is their fault.
Ferrets are crafty and retarded at the same time, there are reasons why most animal sanctuaries have strict boundaries between play areas and sleep areas, and bolt down everything.
This is at the very least negligence from a professional animal rescue.
I called it like a week or two ago.
This faggot lets them piss and shit everywhere and thinks "Oh, I'll just scoop it up and use a carpet cleaner with special enzymes huhu." not knowing the true evil of these weasels. His gross neglect is nothing new and I mentioned how it was only a matter of time until they start dying.
I'm not vindicated by this. Saved animals that have been domesticated don't deserve death through any means be it accidental stepping on or "letting the ferrets have their bedding material". You're supposed to have multi-level kennels with low clutter so this kind of shit doesn't happen. I'm pretty sure if you were to report him to the local animal control for abuse and say:
"Jason Thor Hall at -insert address here- announced to the world that his ferrets that he's supposed to be providing sanctuary to blocked up their nesting with bedding material and gave themselves heat stroke which means he has neglected them to such an extent that they had an excess of material in which to put themselves in danger and potential fatal conditions for said domesticated animals." this would go on a report. This would ALSO be reported to the state board for charities AND potentially affect the status of his nonprofit. To be honest, this "Mistake" (nearly killing 2 ferrets through neglect in 1 night) is enough in my mind to remove the animals from his possession, nuke the charity status, and redact any status of sanctuary for animals. I don't give a fuck if they "bring him joy" because he nearly kills them. He has cats and dogs. He should stick to the animals that won't an hero overnight. His faggoty little ass can't handle it - he shouldn't be responsible then and should have the animals in the custody of a
REAL REHABILITATOR AND SANCTUARY."
That's just my take. I'm also bias because I knew this asshole was killing animals and now he thinks transparency and disclosures are going to cover his ass. It's very possible that he just threw a few pillows in there and fucked off and when they checked on the animals 10 hours later they managed to move them around to make space only to block the "door" or whateverthefuck it was.
Edit: Put all the animals down. I saw the whole thing behind the sanctuary for getting "Ferrets with rare heart/blood/kidney conditions" and some inane bullshit on how they're using some kind of chemical to "save" one of the ferrets which is already 6 years of age. Despite all this ferrets usually live 5-10 years and have a history of necking themselves when their caretakers are neglectful (suffocating themselves, jumping off couches and tables and breaking their own necks, getting themselves crushed, ect). Jason and his Ladyboy (who claims to be an exotic vet) should have any and all credentials and licenses pulled - especially for the Ladyboy pooner that claims to be a specialist. The only thing special about these fetishists is that they're megaretarded and need to be removed from society as a whole.
Don't get me wrong - I'm also retarded but I've contributed to the gene pool without muddying it with transboy shit on my dick. I've never "nearly killed an animal out of neglect" and I have a day-job. At this rate, Jason Thor Hall is just some power tripping nepobaby furry richfag who fell upwards and into money. Gross.