If you know me, I'm a sucker for rats generally! With that said, rat preds are always gonna be a strong contender! I dunno why, just generally find rats, or rodents in general overall to be appealing! So mice, opossums and the like are pretty easy go-to preds for me!

With that said, I'd typically go on a pred-by-pred basis, because pokemon and digimon both have their fair share of monsters that can be great as preds and then those among my friends that are into vore can easily sway me even if their character isn't of my favourite species because it's more about them and their characters.

There's very few species out there that doesn't appeal to me, and even then, kudos to those in which they make those species I don't normally take to more appealing, because I'm not saying it's impossible! But otherwise, almost any species is fair game, heck as a furry, I'm a sucker for humans too, so if you have a human character, chances are you're gonna win with me easily.

TL;DR, I love rats as preds, rodents more generally because mice and opossums can easily fit that space for me too, but otherwise I'm open to most species as preds anyway.