Pets

[Harmacist]

Just got the DLC. Any quick guide to know what each pet does? The wiki seems outdated. Thanks!

[jasta85]

The wiki has the basics there, you can level up pets if you use mods or dominate them and allocate their points so you could potentially turn Frillicent into a mental mutation killer if you go that way. If you don't do that they tend to be mostly an additional follower with some individual quirks that you can equip with gear and help you fight.

The Owl has a small chance to reveal secrets
The network of roots gives you a shared storage chest in villages although last time I checked it was buggy and you could lose your stuff, don't know if that got fixed.
Mote Cloud will provide you light
Unpleasent mirror will debuff enemies but doesn't move.

While there are ways to make them powerful (as stated above), you can do the same by just waterritualing a powerful legendary in game or using skills to get better followers. They're more of a fun little side thing backers could get in the past, usually mostly helpful at the start of the game when you are weakest.

[Harmacist]

I see, many thanks