Someone interject quick if you can think of something better, I'm going against my own logic here, by choosing the family of common small species, but arguably many live under water which has been ruled out.
Squirral like family might be a better fit..
en.wikipedia.org/wiki/Procyonidaeor might be worth trying to narrow down the geographic location again...
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What we know so far....
20. Smaller than an average dog
19. Not an insect
18. Not a reptile
17. Smaller than a loaf of bread
16. Not a common pet
15. Not a rodent
14. Not a bird
13. Carniverous
12. Can't fly
11. Native to America
10. It’s a vertebrate
9. Doesn’t live primarily under water
8. Doesn’t have spots
So we’re looking at a carnivorous land mammal/amphibian native to America, smaller than a loaf of bread, that’s not a rodent, mustildae or common pet, doesn’t have spots and can’t fly.
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