Questions & Answers about Hunden går i koppel.
Hund means dog, while hunden means the dog.
In Swedish, the definite article is often added as an ending:
- en hund = a dog
- hunden = the dog
Since hund is an en-word, its definite singular form ends in -en.
Går is the present tense of gå.
The basic meaning of gå is go or walk, so går literally means goes/walks. In this sentence, though, it is part of a very natural Swedish expression, so the whole sentence is understood as something like the dog walks on a leash or the dog is on a leash.