Could do a deinosuchus? Aka giant croc :3 Or if non dinosaur, maybe some species of rattlesnake~

I've gotten a few Sarchosuchus suggestions in other places. Big ancient croc might be on the list :D

My guesses:
-Tarantula
-Quetzalcoatlus
-Dodo
-Greek gorgon (the OG ones, not the half-human half-snake modern ones)

Birds!
But apart from those...
Crested Hadrosaurs would be cool.
Cetaceans, too, would be neat to see.

Bird sounds fun, got any particular one in mind?

I'd say seagull and crane, but that would be rather self-centered.
Maybe consider more like body/beak types. Some common species, maybe some exotic, ones with long necks, others with like a big or weird style of beak. You know, vary things up.

If you want some specific recommendations...
Maybe like a toucan, an ostrich, an albatross, a superb bird of paradise, and a blue jay.

Thanks!

Dinosaur, Prehistoric marine reptiles, Mammoth, Wolly rhino

Gecko

Skunk

Duck