Considering it is unlikely that any of these groups of animals is ever going to work together like a trained army or chess pieces against a distinctive foe or group is about on par with Fantasy Football ...
may as well go all out.
You forgot ...one that can take on allll of your packs of beasties...at once even...
just as laser sword beats rock, paper and scissors...
so "the Blob" eats all comers.

he'll eat everything you throw at him...and just get bigger.
only thing that could "do" him would be...
you got it...