There are two different grammatical genders in Danish - common gender and neuter gender. They are showed by artikels. "En hund" = common gender; "et mus" = neuter gender. We see two articles, which indicate the grammatical gender. "Den" and "det" are something like "that" or "it" en English. But "den" is related to common gender and "det" is related to neuter gender. I hope I helped you:)
Can someone please comment on the pronunciation of "Jeg"? I am doing the Pimsleur Danish as well (all audio) and sometimes it is pronounced "yuh" as here, while other times it's "yie" (to rhyme with "pie"). Is this a regional thing or does the sound change according to what follows? It's driving me mad!