Monster Ideas

Here are some animals that would be good to hybridize.

Regenerating lost limbs;

 Axolotl

Crab

Glass lizard

Great camouflage; 

Leaf insect

Chameleon

Flower mantis

Cuttlefish

Flying animals. Insects would make better monsters than birds as they are more creepy;

Hover fly

Giant hornet

Dragonfly