Mods and the authors that directly or indirectly inspired Symbiosis. For those that like smaller, less sweeping changes, I highly recommend subscribing to some of these.

Swishos:
Swish Mods : Bandara Standalone

Kodi Sky:
Dangerous Arachnids
Canine's Speed
Herbivore Tweaks

Gevurah:
GARRU, GARRU, GARRU!
Swamp Nests!
Mountain Dog Dens

2PercentNate:
Balanced Animal Speeds
Beak Thing Reduced 3-Target AoE

theigabod:
Swamp Turtle Enhancement

ikahurula:
Swamp Turtle FIX
(Also included in the Unofficial Patches for Kenshi mod.)

Sly~<3:
Dog Metabolism Tweak

realpikkio:
Better Leviathan Loot

Lyкiяe:
Bigger Beast Inventories

Kindrad:
No Combat 'Limbs' (Bonedog AI Change)

AntiCheatBot:
Bonedog Reduced Bite Range

Some BONUS mod recommendations, for things that aren't covered in Symbiosis but you should still subscribe to anyway!!

Beast Bounties also by Lyкiяe

White Gorillo Fur Fix by FieryPhoenix

More Detailed Landbat Fur by No Souls Unturned.

Goat Retexture by Cattrina