Wow, this is weird because I was thinking of starting the exact same thing yesterday. Except I was just going to do it for dogs. How about an alphabetical list? Like, copy and paste the ones in the post before you, and then add your own.

Caleb (cat)
Josie (dog)
Kiba (cat)
Mike (betta)
Oliver (rat)
Smitten (cat)
Timber (dog)
Tobias (rat)
Zeke (dog)

How about like that?