Head transplants are do-able, reviving frozen heads of dead people, I haven’t seen any evidence of it.
The Russians have footage (decades old) that asserts that a dog was “killed” (no heart activity) and brought back to life (don’t know how much longer it lived). They also grafted dogs heads (living) to live dogs, both heads survived and the animals lived a few weeks until infection set in I think (don’t know if any tissue was rejected).
There is also footage showing a living severed dog head being kept alive. It isn’t rocket science.
And now, Roky Erickson’s Two Headed Dog. People thought h was literally crazy for mentioning such things. With the internetz, you can see the footage for yourself. No dogs in this clip, just guitars and rock & roll.
Roky Erickson - Two Headed Dog 1980
https://www.youtube.com/watch?v=Gqwnrn0iKCo
Just sickening. They should have used their own heads, not some poor little dog