Jungle Creatures Volume One (2020)

From publisher blurb:

Welcome good Dungeon Master...
Put on your best exploration gear and come with me into the jungle to face the perils that await! And these are no ordinary perils – from lightning casting crocodiles to teleporting dinosaurs ... these creatures put a new twist on these jungle beasts!
Whether you are heading to Chult, daring The Tomb of Annihilation or roaming through a homebrew jungle these creatures will help flesh out the encounters.

Whilst these creatures have fantastical powers they have been designed and written after significant research into the creatures themselves. This included getting some advice on animal behaviour from both crocodile and gorilla experts.

Even the Cyclops was researched by going back to the original myths and what you have here is an intelligent, magic weapon and armour forging cyclops who is sadly a little too fond of his drink and almost perpetually hungry. Stay around him too long and he will insist you go fetch him dinner - and cue the Stygian Goat multi-stage skill challenge!

(Which in our honest opinion is much more interesting than the dumb, lumbering brutish cyclops featured in the Monster Manual!)