After a frog is put in a jar in the kitchen, it is seen climbing onto the lip of the jar. But in the next shot, suddenly the frog has disappeared back into the jar.
When the Boy Goat Herder is placing dirt on Karin's body, her torso moves even though she is supposed to be dead.
After seating himself in the room where the three drifters are asleep, Tore drives the point of his dagger into a table with a loud thump. It's implausible that none of the drifters were awakened by this.
At the beginning, Mareta says it's Friday. But later that morning, she tells her daughter it's the middle of the week.