15 little-known facts about Rachel Green even die-hard 'Friends' fans may not remember

She was in a sorority in college

Though it's unclear exactly where Rachel went to college or what she studied, we do know she was in a sorority.

On "The One With Rachel's Big Kiss," Rachel runs into her former sorority sister Melissa (Winona Ryder) and has dinner with her and Phoebe (Lisa Kudrow).

She's afraid of swings because of a 'traumatic incident'

On "The One With the Home Study," Ross (David Schwimmer) wants to take his and Rachel's daughter, Emma, to a playground.

Rachel is appalled by the suggestion and doesn't want Emma to go because of her own traumatic experience on the swings as a child.

She explains that she had to cut her hair out of the chain on the swings, and she was left with an uneven hairstyle for weeks.

She has a small tattoo

Rachel and Phoebe decide to get tattoos together on "The One Where Joey Moves Out."

Phoebe chickens out before actually getting her tattoo, but Rachel gets a small heart on her hip.

The tattoo doesn't seem to be shown or mentioned again after this episode.

Rachel had a very brief smoking phase

On "The One Where Rachel Smokes," Rachel realizes she's missing out on the conversations her new work colleagues have during smoke breaks.

She tries to start smoking to be included but instead tells her coworkers that she's working on quitting.

Other than Chandler (Matthew Perry), Rachel is the only other member of the main friend group who is seen smoking on the show.

She has a bit of a phobia about her eyes being touched

When Rachel's eye is bothering her, Monica (Courteney Cox) accompanies her to the eye doctor on "The One With Joey's Big Break."

Rachel doesn't like having her eyes touched, which makes the examination difficult.

The doctor prescribes her eye drops, but Rachel is unable to use them herself. The rest of the gang ends up holding her down to administer the drops.

Rachel briefly had a pet cat

On "The One With the Ball," Rachel buys an expensive hairless cat.

She doesn't have the cat for long because it's aggressive and Rachel gets tired of the hissing.

Rachel ends up selling the cat to Gunther, who buys it hoping that Rachel will want to visit.

Rachel had a nose job after high school

Rachel and Monica both looked very different in high school.

Episodes with flashback scenes show that Rachel had a completely different look because she had a nose job as a teenager.

Her childhood dog lived a surprisingly long time

Rachel finds out that her dog, LaPooh, died on "The One With the Kips."

Ross is surprised by the news because he remembers the dog from high school.

LaPooh apparently lived a rather long life but died after being hit by an ice-cream truck.

Aniston didn't like Rachel's signature haircut

Rachel's early haircut is an iconic part of 1990s fashion, but Aniston told Glamour in 2015 she didn't like the look.

She said it was too difficult to maintain and isn't something that matches her personal style.

During the later seasons of the show, Rachel's hairstyle changed to a longer look.

Rachel was almost played by another 'Friends' actress

It's hard to imagine anyone but Aniston playing Rachel, but the iconic role almost went to another "Friends" actress — Cox.

Cox chose to play Monica instead, and Aniston was later cast as Rachel.

Aniston was also the last of the main friend group actors to be cast.

Her first kiss with anyone in the friend group is with Chandler, not Ross

A flashback revealed that Rachel kissed Chandler at a college party she attended while she was still in high school. 

She doesn't start dating Ross until she's out of college. This means that her first kiss with a member of the friend group is with Chandler.

Rachel is the only lead friend who has kissed everyone in the group

Plenty of the friends in the main crew have kissed each other, but Rachel is the only one who has kissed every person in the group.

She kissed Ross and Joey while dating them, and the flashback scene revealed that she made out with Chandler at a party.

Rachel kissed Monica off-screen on "The One With All the Haste" to get their apartment back from Chandler and Joey, and she kissed Phoebe on "The One With Rachel's Big Kiss."

Rachel has two sisters, and they're never shown on-screen together

Rachel's sisters both visit her separately during the series.

The first sister shown is Jill (Reese Witherspoon) on "The One With Rachel's Sister." After Emma is born, Rachel's other sister, Amy (Christina Applegate), visits on "The One With Rachel's Other Sister."

Both sisters are on two episodes, but Amy and Jill are never in an episode together.

She's either a Taurus or an Aquarius

On "The One With Joey's New Girlfriend," Gunther asks Rachel when her birthday is and she tells him it's May 5.

That birthday makes her a Taurus, but a cop who pulls her over says that she's an Aquarius on "The One with Chandler's Dad."

This seems to be a continuity mistake, although it's possible that Rachel just didn't correct the cop when he remarked on her zodiac sign.

Rachel is afraid of fish

Phoebe tried to get Rachel to move back in with her on "The One With the Holiday Armadillo," so she tries to make her hate Joey's apartment.

But when Phoebe gives Joey a pet tarantula and drums, Rachel isn't bothered.

When Rachel realizes what Phoebe was trying to do, she tells her that if she wanted to scare her, Phoebe should've bought Joey a fish instead, which Rachel apparently finds scarier than spiders.