Around 15 years ago I read a book about a guy (he was a primitive barbarian hero type if I recall correctly, you know loincloth, muscular, the whole trope), whose home was being attacked by some monsters (I can't remember the type of the monster though). In response to that he embarked on a quest to find some other monsters that can guard him from the ones attacking.
There was many different species/cultures he encountered on his journey, and I think it's implied high tech existed, but was not available to our hero and his people.
I also think I remember the hero having a wife, which died.
The cover of the book (Polish edition) had some type of dinosaur or other big creature on the cover.
One additional info I remembered was that he was traveling with a guy who seemed to be more advanced than him (in terms of tech and knowledge, generally speaking).