Some designs for nuclear bombs included live chickens which would produce enough heat to keep the electronics active:
https://www.military-history.org/feature/pigeon-guided-missi...
https://en.wikipedia.org/wiki/Bat_bomb
- "Tests were used to determine how much napalm an individual bat could carry, determining that a 14 g (0.5 oz) bat could carry a payload of 15–18 g (0.53–0.63 oz)..."
Similar ideas were (perhaps apocryphally) used in the medieval ages,
https://en.wikipedia.org/wiki/Olga_of_Kiev#Drevlian_Uprising ("Olga_of_Kiev#Drevlian_Uprising")
- "Olga then instructed her army to attach a piece of sulphur bound with small pieces of cloth to each bird. At nightfall, Olga told her soldiers to set the pieces aflame and release the birds. They returned to their nests within the city, which subsequently set the city ablaze. As the Primary Chronicle tells it: "There was not a house that was not consumed, and it was impossible to extinguish the flames, because all the houses caught fire at once."[22]"
<https://en.wikipedia.org/wiki/Olga_of_Kiev#Drevlian_Uprising>
And they say it is not a fools day story despite it surfaced on 1.April, but I am not convinced.
But they also don't say how serious that plan was. It was never more than a theoretical concept it seems, after all.
> During WWII, British Special Forces considered stuffing dead rats with explosives and dispersing them over Germany. They hoped that the Germans would gather the rats and dispose of them in industrial furnaces, producing tremendous explosions that would cause catastrophic boiler failures.
https://www.theguardian.com/uk/1999/oct/27/richardnortontayl...
https://en.wikipedia.org/wiki/Applied_behavior_analysis#Crit...