Kaley Cuoco Celebrates Her 30th Birthday With Her Sister, Furry Friends, and a 'Bachelorette' Star

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Happy birthday Kaley Cuoco!

The Big Bang Theory actress turned 30 on Monday, Nov. 30, but celebrated her birthday early with a trip to Mexico. The well-known animal lover visited Black Jaguar-White Tiger founder Eduardo Serio at his wildlife sanctuary, bringing along her younger sister, Briana Cuoco, who turned 27 on Sunday.

"2 planes, 12 best friends, one 30th bday, destination unknown = priceless," Kaley Instagrammed on Saturday along with an adorable picture of her sporting a birthday hat.

WATCH: Kaley Cuoco Gets Emotional While Discussing Her Difficult Year

She later shared a picture of her petting a tiger.

"Starting off my 30th year with a roar ... Surrounded by my best friends and all the lions and tigers I can count," she wrote.

Clearly, Kaley wasn't afraid to get up close and personal with the exotic animals.

The actress was surrounded by 12 of her BFFs on her trip, including her sister, and called the getaway a "trip of a lifetime."

"Serious squad goals!" she posted alongside a happy group shot of the all-girls trip.

Former Bachelorette star Ali Fedotowsky also joined the festivities, Instagramming a picture of her and Kaley bonding with a tiger, and a sweet selfie with Briana.

Kaley's milestone birthday comes two months after her surprising split with her ex, Ryan Sweeting. The sitcom star has made no secret about her desire to move on. She recently decided to get a back tattoo covered up that marked, in roman numerals, her Dec. 2013 wedding date to Sweeting.

"Note to self -- do not mark your body with any future wedding dates," she cracked on Instagram.

WATCH: Kaley Cuoco Sports Short Shorts on Night Out With Her Ex, Johnny Galecki

ET caught up with Kaley earlier this month at the All-Star Dog Rescue Celebration at Barker Hangar in Santa Monica, California, where she talked about the "main man" in her life -- her adorable dog Norman.

"He's everything," she said. "We've been through a lot together and, yeah, he's very near and dear to my heart."

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