"He is eating them."
Translation:Han spiser dem.
That was my first thought too. Second thought: "dem" could refer to a set of things: two apples, for example.
Exactly, "dem" can be anythind plural, the apples, the peanuts, the strawberries and so on. Of course it could also mean the people but it probably does'nt in this case unless the sentence is about Alfred Packer.
Wasn't the dog enough?