What I found absolutely impressive and stunning about this comic is the way the artist explained the identification and elimination of the confounding factors in the Rat Park study. This is one of the hardest parts of experiments to explain to the public, and I think it was just brilliantly done.
This is so important! And a good comic!
But one thing that worries me - I really hope the Rat Park rats weren’t kept on cedar shavings because that can be very toxic to rats and harm their breathing. :( I almost lost 2 rats that way before I knew better. So please do not keep rats on any sort of conifer or softwood shavings (cedar, pine, etc.)! Get paper bedding or look into alternatives like cloth, corncob, etc!
Other small animals too, including hamsters and guinea pigs. The researchers may not have known better, especially decades ago. But, cedar shavings in particular really are not recommended now. Keeping inhaling the aromatic compounds wouldn’t be particularly good for humans, either. (Besides it probably being really unpleasant just to live in an overwhelming cedar smell all the time…)
There are also paper-based beddings available. Kiln-dried pine may be much safer since the heat treatment process drives off most of the phenol, etc. Hardwoods like aspen are probably the safest choice if you want to use a wood shaving bedding, though.
Those things are also bad for cat litter. And that alarmed me the moment I read it too (I’ve had pet rats before, and other rodents). But I love the comic, way too many people have no idea this ever happened – they all know about the first rat experiments somehow, but not this. I always worry about the rats, though. :-/