But Hungarian penguins are not natvie to Hungary, it will probably take a generation or two.
Why is is "A pingvinek"? It's like another sentence in this lesson: A lovak... I think it means penguins or horses in general, but it looks like a singular definite article (the), followed by a plural noun.
Could someone help me understand this?
Hungarian, like English, does not have a "singular definite article".
It just has a "definite article", which is the same for singular and plural -- English has "the book" and "the books", both with "the", and Hungarian as a könyv, a könyvek, both with a or az alma, az almák both with az (the distinction only depends on the sound of the word coming after the article).