Spider

The Spider (クモ, Kumo) can be found dangling from fruit-bearing trees once it has been shaken by the player. They are common and easy to catch, since they do not try to escape from the player if they are approached. Like other bugs, there is a chance that a villager will stand still while looking at a tree, if shaken, a spider will most likely drop down.

Tarantulas are another kind of catchable spider in Animal Crossing games, but in-game, they are not related to Spiders.

Donating to the Museum
As with all bugs in the, the Spider can be donated to the Museum. Every donation is followed by a small talk from Blathers, the curator;

In Animal Crossing
"Hanging a toy spider from a string to frighten someone is a jolly good childhood ruse known throughout the world. Now, I may be mistaken, but I believe this shows the general loathing civilized folk have for spiders. They deserve it! Eight legs, bug diet, and those eyes! They just have too many! Blech! Sinister fiends!"

In Wild World
"I can think of nothing more repugnant than becoming entangled in a spider's web! After thrashing about, you think you got it all off, but no, indeed! A little tickle on your neck and you thrash anew! Blech! Such foulness... Hoo... But I digress..."

The Spider is displayed in the second room of the insect exhibit, on the second tree from the bottom at the far end. It is seen descending from its hiding place in the leaves of the tree on a spider silk, waiting a while, and then scrabbling back up again.

In City Folk
"Horrors! My apologies, but I get rather jumpy around fast, multi-legged critters like this one, eh wot? Even worse is the fact that spiders have eight eyes! Even when it looks away, it can see our every move! I've heard some people worship the spider... And I've also heard that you will not find me in those places."

After donating, the Spider can be found on a tree in the central terrace of the insect exhibit. It will come down out of the tree on a thread when approached.

In New Leaf
Upon being donated, the Spider can be found in the room of the bug exhibit with the Rafflesia, on the middle tree of the northern terrace. It will come down out of the tree on a thread when approached. The exhibit has this to say about the Spider:

"Spiders emit silk from their spinnerets and use it to create elaborate webs to snag prey. The horizontal threads are sticky to the touch, allowing them to be used as very strong restraints. However, the vertical threads are smooth, allowing spiders to walk on them without getting stuck."

In New Horizons
"The spider is renowned for having eight eyes and eight legs... WHICH IS TOO MANY, I SAY! Oh dear. I do apologize. Now where was I? Most spiders are carnivorous. In fact, some will eat creatures several times larger than themselves. To catch their prey, many of these ruthless predators spin sticky webs of surprising strength. Worse yet, they've also been known to ambush their victims, and some even chase down their meals! All this talk about the feeding habits of spiders... I'm feeling quite queasy. Hoot! The Horror!"

Encyclopedia Information
When the player has caught the Spider, they can find information about the insect in the bug menu. Below is the information regarding the Spider:

Further Information
Argiope bruennichi, commonly known as the wasp spider, is a widespread species of spider that can be found in Europe, Africa and much of Asia. Their common name refers to the black and yellow stripes they have on their abdomens,