Theories in ONwKotya and FNwBarsik

I found somewhat of a conection between the rooms in every barsik game

Моя теория: Барсика покармили просроченым кормом тем самым он стал бешеным и агресивным

Who has the best theories for this barsik that i call dread barsik

BEST THEORY GETS COMENT PINNED

Here is what Jake says on the five nights with barsik 3 night 1 cutscene