Questions & Answers about Hunden er lydig.
Because hunden is the definite form: the dog.
In Norwegian, the definite article is usually added to the end of the noun instead of being a separate word in front.
- en hund = a dog
- hunden = the dog
So Hunden er lydig means The dog is obedient.
Hund is a common gender noun in Bokmål.
That is why its usual forms are:
- en hund = a dog
- hunden = the dog
If it were a neuter noun, you would expect forms like et and -et, but that is not the case here.