Humans are an extinct species that existed hundreds of thousands of years ago. Humans were notable for their wide variety of social norms, values, languages, and traditions - in fact, much of the modern cultures within Valai were originally human cultures.
Humans historically were much like what they are in our world, much more intelligent and much more common. It was the domestication of wolves around 50,000-20,000 years ago that changed this. As wolves began to be relied on more by humans for their hunting and gathering, wolves started unexpectedly getting much more intelligent. They found ways to outsmart humans and even start hunting them themselves. Once wolves started to mingle with other species and those species started to become smarter and more human-like as well, humans started to dwindle in numbers. Animals eventually started to develop ways to speak as humans did and take languages and traditions from the humans and even form their own. Now in the currentday, humans are extinct and pretty much never brought up unless in a history class. This is also the source of much of the superiority complex a lot of wolves and dogs tend to have and why they're so high up in social hierarchies.