Rare TF's that We Need More Of?

[DollyBonnie]

So in my time reading TF fiction, I feel the most common animals that people become are: pigs, donkeys/horses, dogs, wolves/werewolves and cows. And it seems like these stories are everywhere!

Now I know that two of my faves (mice and chickens) are probably on the second-tier compared to those I listed above but what about the really deep cuts?

I've only ever read one really good turtle TF story. Ditto for snakes and fish. And I don't recall seeing a lot of dinosaur stories. Same with like elephants. I've tried to write some invertebrate stories, but I struggled to through a spider TF because I couldn't get the abdomen formation right enough.

So what are some of your favorite TF deep cuts?