Some animals will chew. We anticipate it. So we located the transformer right at the plug, to make sure that even if they chew through the cord, the voltage running the cord is low enough not to harm them or to start fire.
And we are stepping further to sculpt and test various designs of the cord itself to be chew-proof in the first place.
We are still going though trials and errors, but it's only a matter of time until we find a form that fuses a great degree of safety and sound aesthetics.
In electrical layout and software we've implemented layers of failsafe features to make sure that when there's something wrong with one component, heating and cooling will stop and indicate the error by blinking in red so we can service them.