Themed or Purebreds are pets that are themed... Uhh bad at explaing but here's an example:

This guy is a Fresh Earth Vulynx,

If you scroll down on his profile it says this:

This part shows he is the is Themed >>>

And in his linage he will have a star above him.

Here is a list of all the themed in existence:
https://www.sylestia.com/forums/?thread=29574

Now a regular pets won't say that:

If you look Fallen Leaves doesn't have anything like that on his profile.

And if you check his linage he has no star above him.


Now a Purebred won't have anything on their profile either and you have to check linage.

Now she is also a Fresh Earth Vulynx, but her profile won't say anything

But if you check her linage it will show that she is themed.

All of the first generations on her family tree are starred meaning she is clean lined.

Now Pretagged are a more difficult to identify though if you know the color scheme they can be quite easy to tell.

This guy is a Pretagged Themed Springtime Zolnixi!
Pretagged are themed pets that existed before tagged were starred.

If you need reference on a list of pretagged pets on the Sylestia wiki:
http://sylestia.wikia.com/wiki/Themed_Pets
Now if you look at his profile page he doesn't have a theme name like the Fresh earth from above.

Now to note if the pet says it was Generated it is NOT a pretagged.
We know this guy is a prettaged because he came from the 2013 Spring Fest.
Finding PB for prettaged themes is the exact same as finding PB for Tagged Themed.

If you have any other questions don't be afraid to ask!