About This File
I don't know who the original author of this mod is, but I'm not taking credit for making it whatsoever. I'm simply just uploading it here for people to find easily as I've been searching hard for it like many other people.
This mod replaces the default Skyrim Dog with a Labrador Retriever. The main file "Labrador" include all of the different fur colors (black, chocolate, and yellow), and SFW & NSFW (penis mesh, balls, sheath) versions. It's compatible with both Skyrim SE and LE, and works with More Nasty Critters (MNC) and Animated Beast Cocks (ABC) from what I observed testing it for the most part.
You will have to pull the textures folder and one of the meshes folder, and extract both folders into a .zip/.rar file to install it into your game. I use Vortex and it worked just fine for me, but I would imagine any other mod managers will work fine.
I will attach the .zip file I used to replace my dogs in my game if you need an example of what it needs to look before dropping it into your game or just want an easy install. I used the black labradors with the "02 Meshes Balls SE Col2".
Below you can find the original place I found this mod:
https://www.mediafire.com/file/avxnxf3k37gtvy6/Labrador.7z/file
Hope y'all enjoy!