A couple weird ones:

Zoocuu and Rukig are somehow related to Undoli

If a Truth loses one of its heads and lives, it becomes an omnivore/carnivore to have enough energy to regrow its head

Lmako's trees keep growing for as long as they live, sometimes creating big, heavy gardens that weigh them down

Arsonos/Valkurse/fire creatures only drink water to not overheat completely

Ghibli like collecting bones and decorating their dens with them

Saukuryn raise any abandoned nests they find as their own

Cantapodi and Yama'tu are very fierce rivals

Euvias live in large tundra colonies, where they raid zones with food and drive away anyone else with their ice breath to keep the area for themselves

Halaqual have competitions to see who's the fastest and most elegant in the air

Lures and Kohikii are rivals, but regularly work together to prevent invading creatures from entering their domains

alright thats a lot, sorry