Cat

Cats are creatures mentioned or seen in Fallout 2, Fallout: New Vegas, Fallout 4, Fallout 76, and Fallout Shelter.

Background
Cats are a species of small predatory carnivorous animals that were valued by humans before the Great War for their companionship and ability to hunt vermin, such as rodents, snakes, scorpions, and other household pests.

After the Great War, many cats in what used to be the United States were hunted for food because they were easy prey. The overhunting of cats caused local extinctions in some areas.The Chosen One: "{120}{}{Why the glum flace?}" Stacy: "{134}{}{Oh, nothing really. Just sometimes I get thinking about my mom and cat. I miss them so very much.}" The Chosen One: "{135}{}{Cat?}" Stacy: "{137}{}{Yeah, Cuddles. She was such a sweet cat. I really don't feel like talking about it... Well, unless you'd like to buy me a drink. That might help.}" The Chosen One: "{139}{}{Of course I will. I'd love to hear about it.}" Stacy: "{146}{}{I hear there used to be ones that were as big as you and me. They used to eat animals as big as a brahmin. Now that's scary stuff.}" The Chosen One: "{148}{}{Yeah, it is.}" Stacy: "{149}{}{The kind I'm talking about is a small cute animal, bigger than a rat but smaller than a dog. Some are fluffy, like my Cuddles, but others have short hair.}" The Chosen One: "{150}{}{Really?}" Stacy: "{151}{}{They like to be pet like a dog does, but cats make this wonderful relaxing sound when you pet them.}" The Chosen One: "{152}{}{Strange.}" Stacy: "{153}{}{Cuddles always used to help me go to sleep at night. I think of her every night when I try to go to sleep.}" The Chosen One: "{155}{}{Go on.}" Stacy: "{156}{}{I had her when I was a kid, but she disappeared. I didn't know then what happened to her, I was too young.}" The Chosen One: "{157}{}{Why?}" Stacy: "{158}{}{Well, food was awfully scarce back then and people had to eat. It's quite sad really...}" The Chosen One: "{159}{}{What?}" Stacy: "{160}{}{People would hunt them because they were such easy prey. None of them are around anymore because of it.}" The Chosen One: "{162}{}{I can understand that.}" Stacy: "{163}{}{Those were the wild ones, but I'm sure that's what happened to mine. Now I know why Mom always kept a close eye on her.}" (Dcstory2.msg) Although not as common as before the Great War, domestic cats still survive in New California, the Commonwealth as of 2287 and in Appalachia in 2103.

Cats made their first live appearance in Fallout 4, being frequently seen in the Commonwealth, as common pets kept by both wastelander and vault dweller alike.

Fallout 2

 * Stacy, a resident of the Den in 2241, used to have a cat called Cuddles as a child that was killed for food.
 * A man in Broken Hills mentions his pet cat.
 * The Shark Club comedian makes a joke about Super mutant trying to get a cat out of a tree.

Fallout: New Vegas

 * A cat can be seen in the slideshow in the sacrificial chamber in Vault 11.

Fallout 4

 * Two cats can be found in Catherine's room in Sandy Coves Convalescent Home.
 * A cat named Toro can be found in the schoolhouse in Diamond City.
 * A cat called Emmett can be found next to Proctor Quinlan's desk on the Prydwen.
 * Several house cats can be found directly south of Gorski cabin, along with a trader selling cat meat at Walden Pond.
 * There are a large number of cats in the Hawthorne residence in the upper stands of Diamond City.
 * Dora can be found in the town of Covenant.
 * There is a grey house cat found inside of Sleepwalker's place.
 * There is a cat named Maisie lounging around the house entrance of Abernathy farm.
 * There is a cat near the trader's shack, west of the Ranger cabin.
 * There's a single cat in South Boston Church in front of a cat altar.
 * Inside Vault 81, there is a cat called Ashes that belongs to Erin Combes.
 * A gray cat can be found in the Mean Pastries shop, in the vicinity of Pickman Gallery.
 * There is another house cat in the cottage near Pickman Gallery.
 * Mr. Pebbles is mentioned in posters as being the first cat in space.
 * Three cats can be seen following a veterinarian Mister Handy in a random encounter.
 * Multiple dead cats can be found inside the Institute FEV lab.

Fallout 76
Cats return in Fallout 76, as either unique ones or a generated cluster of three level 1's with their name being different breeds, tabby being house cat.
 * A cat named Cheswick can be found at the Wixon homestead.
 * With the release of Wastelanders, Cheswick II can be found at Wixon homestead.
 * Generic cats can be reliably found between 98 NAR Regional and Maybell Pond.
 * Two can be found in Scoot's shack, to the south of the Southern Belle Motel.
 * One can be found at the billboard to the west of Beckwith farm on the edge of a cliff.
 * Murgle claims a coffee hut in the Mount Blair region, directly between Mount Blair trainyard and Welch station. A painting on the counter may or may not be of Murgle that the cat sits and meows at.
 * Tutti Frutti can be found in Foundation, in the Founder's Hall.

Fallout: Brotherhood of Steel
Mr. Pussy, a domestic cat, died in Carbon, Texas in 2208. Ruby the prostitute wanted to find him when he got lost, and asked the Initiate to help. They discovered the cat's corpse in the carbon crater and brought it back to Ruby.

Van Buren
According to the Nursery design document, various cats were to make an appearance there. There would have been friendly domestic cats kept by humans, as well as wildcats, bobcats and panthers that were hostile to the player character.

Related quests

 * Listen to Stacy's kitty story
 * Here Kitty, Kitty
 * Someone to Talk To