After the rebellion of the hens, Napoleon killed 3 sheep and several hens for their treachery due to "Snowball's so-called influence". Napoleon became an iron dictator who enforced his foothold on animal farm.
Kiling some animals and instilled an unshakable fear into the minds & hearts of the animals of the farm.
This picture ilustrates dead sheep. This picture illustrates dead hens.
Both species were killed by Napoleon's hench dogs.