Tier 1
Horny toad - contact poison inspires a frenzy sometimes making enemies lose focus
Mangy dog - mount: attempt to grasp the leg of a prey
Worry: when mounted can savagely hump the prey doing damage
Tier 2
Jack rabbit - pack forming: when 2 rabbits are grouped they continually create an army of baby bunnies
Naughty squirrel - always hiding nuts

Tier 3
Trouser snake: spits venom, reveal its true form causing everyone to run in terror
Cock blocker: has rescue and ability to create ironic t-shirts. Gets auto lash from absurd facial hair

Tier 4
Sex panther - nuff said
Anaconda - nuff said