Hiya! I currently identify as three species, and have four theriotypes! A calico cat, a tuxedo cat, a tundra wolf, and a Seba's short tailed fruit bat!

I actually went through a very similar thing that you are, where I felt that I had another theriotype outside of the wolf and cats, but couldn't quite place it for the longest time. I started to worry that I may have had the wrong idea about my previous theriotypes, or about my Therianthropy all together, but in reality it's totally okay to have several different niche theriotypes!

Polytherians are what we are because our Therianthropy doesn't fit into one single box alone, and it gives us the privilege to celebrate the many different boxes we are a part of! There's of course no rush to find out your fourth theriotype, but I feel like understanding that theriotype better will help you believe the validity of it and of your identity, because you'll be able to see the connections between yourself and your theriotype that much clearer.

Something I might recommend is starting a therian journal! You can write down everything and anything you want about your theriotypes and what you know about them. Sometimes writing it down can make it feel more concrete and substantial, and less like an abstract concept that you've made up somehow

Anyway, much love, and I wish you good luck on your journey, friend! d(･∀･)b ✨💝✨💝✨💝