What the ideal dangerous creature to keep in my moat?

How many Cthulus can you round up and fit in a moat?

Your Cthulhu is so fat when it sits around the castle it sits AROUND the castle.

They tend to stay on their home bush.

These webs are *crawling *with spiders. Good luck getting any for dressings without getting any spider.

Well, I don’t owe the IRS anything…

No problem, the nutsack on their neck is an easy target

Cassowary eat mostly fruit but they are omnivores and their diet also includes fungi, invertebrates and small vertebrates. They have a reputation for being extremely aggressive. That’s about all I really knew about them, but Wikipedia informs that: Specimens 2m tall and weighing 58.5 kilograms (about 130 pounds) have been recorded among southern cassowaries (like the one in the beach video I linked earlier: that’s a southern cassowary). They can run at up to 30 mph in dense forest and jump over 1.5m high (not quite 5 feet). They can swim even tho they can’t fly.

Curiously, I don’t see any information about average lifespan.

Perhaps no one has returned from a study to report it.

The person who said “hyper-active third graders” made a good suggestion, but alligators are such a classic choice that I’d have to go with alligators.

Try both and let them fight it out?

If neither side is completely victorious, and there are third graders and alligators in the moat, is that a bad thing? One would have the best of the most terrifying.

I’m good with it but we may have to add some chihuahuas periodically just to increase the instability. No point in letting things get boring.

Indeed. I am always in favor of chihuahuas when it comes to driving someone or something away.
We must not forget cats.

From what I’ve read alligators are less aggressive than crocodiles. Watching some of the documentaries of the African crocodiles returning year after year to the exact spot where the wildebeests cross, I think crocodiles may be the best answer. Sure it’s been done but for a reason.
Animal Dying Trigger Warning.

Crocs, 3rd graders and chihuahuas sounds like the best deal.

Add some mime cheerleaders and I think we’ve got it solved.

Here are some out of the box ideas from Southeast Asia;

How about Komodo dragons ?

Durian also quite effective againts westerner.
Feed your soldier with jengkol, and told them to pee in the moat,
but i think the smell of the pee will make USA send troops to your castle searching for chemical weapon…

Any creature is allowed, and the purpose is to scare off and keep out intruders?
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Ok, one Marine Batallion.

How do you differentiate them from the regular kind? Or were you just being repetitive?

I read an article once claiming that some South American soccer field built a moat around the field and filled it with piranhas to keep fans from rushing the field. Heck, just a sign saying Beware of Piranhas would probably be enough.

In the Junior High classroom of a coach teaching Earth science, we kept piranha in an aquarium. We had no room for cassowaries, Chihuahuas or mimes, and we hated grade schoolers. But I digress. The fish would hide if someone stuck their hand in the tank.