Modifiers matching snake:

• poisonous,
• indigenous,
• harmless,
• powerful,
• venomous,
• primitive,
• larger,
• beneficial,
• smaller,
• deadly,
• large,
• nonvenomous,
• giant,
• popular,
• nonpoisonous,
• toxic,
• arboreal,
• starting,
• terrestrial,
• exotic,
• local,
• heavy,
• nocturnal,
• predatory,
• wild,
• small,
• interesting,
• dangerous,
• modern,
• active,

Simple categories matching nonpoisonous:

• snake,