Need help in creating wild life in the Dragon Universe

I also need help in creating creatures in this universe. Most of the characters here are anthromorphic versions of real life animals, like tigers, leopards, etc. Some of the characters do resemble closely to humans, like the fish people and snake people.

There is one creature that I did make, but they need to be renamed. They're reptiles similar to T-rex's, but they have the long arms and claws of a raptor. A toddler reptile is one of the main characters, and he's based on a concept I had for Godzilla Jr.

So help a boy out. If you got any beasts in mind, throw it at me.

So you just want unusual wild life like pre historic creatures or rare 'thought to be extinct' creatures for you story along? Or do you want mythical creatures? And do you want me to list a bunch down below?

All 3, some mythical creatures are guardians of certain countries, like the Hydra and a lion with Sphinx esque armor (I need help in remaking that creature). Maybe some bugs could do as well, and some animals that are considered "common." And yes, list as much as you can think of below.

I can get started on listing real creatures maybe later (and mixing them up to make new ones if you want), but for now I can give you this list of mythical creatures I made a while back:
https://www.wattpad.com/629754099-master-list-of-mythical-creatures-canine-feline

I'm taking a look right now, and there are some creatures that I am considering.

Okay, here is a list of creatures that could potentially become guardians:

Fenrir

Nemean Lion

Roc

Hydra

Jormungandr

Now I did have the idea of the Hydra being a guardian for the fish folk in a kingdom called Hyondria, as the name Hydra is similar to "hydro" which means water.

What do you or other people have in mind?

so if you add like, dragons or something, you would need to either keep them fairly small, or have some prey animal that is big enough to feed the dragons.

Actually, dragons are one of the races. They're actually a more powerful race than normal people, because they have god-like powers given to them by their respective god.

However, this god also made creatures that are similar to dragons and also dinosaurs.